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Science

Quarter 1, Wk 2 - Module 2

Effects of Lifestyle on the Functioning of Respiratory and Circulatory System

Department of Education ● Republic of the Philippines

9

Science- Grade 9

Alternative Delivery Mode Quarter 1, Wk 2 - Module 2: Effects of Lifestyle on the Functioning of Respiratory

and Circulatory System First Edition, 2020

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Published by the Department of Education – Division of Iligan City Schools Division Superintendent: Roy AngeloL.Gazo, PhD., CESO V

Development Team of the Module

Author/s: Sharon Jill D. Tiñola Reviewers: Jean M. Arabaca, MT II , Nida H. Gumera, HT V Mario S. Himongon Illustrator and Layout Artist: Chris Sagarino, May D. Arapoc

Management Team Chairperson: Roy Angelo E. Gazo, PhD, CESO V Schools Division Superintendent Co-Chairpersons: Nimfa R. Lago,PhD, CESE Assistant Schools Division Superintendent

Mala Epra B. Magnaong, Chief ES, CLMD Members Henry B. Abueva OIC-CID Chief Ann Q. Solijon, EPS-Science Sherlita L. Daguisonan, LRMS Manager Meriam S. Otarra, PDO II Charlotte D. Quidlat, Librarian II

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Department of Education – Division of Iligan City

Office Address: General Aguinaldo, St., Iligan City

Telefax: (063)221-6069

E-mail Address: iligan.city@deped.gov.ph

Science

Quarter 1, Wk 2 - Module 2

Effects of Lifestyle on the Functioning of

Respiratory and Circulatory System

This instructional material was collaboratively developed and reviewed

by select teachers, school heads, Education Program Supervisor in Science of

the Department of Education - Division of Iligan City. We encourage teachers

and other education stakeholders to email their feedback, comments, and

recommendations to the Department of Education-Iligan City Division at

iligan.city@deped.gov.ph or Telefax: (063)221-6069.

We value your feedback and recommendations.

Department of Education ● Republic of the Philippines

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Table of Contents

What This Module is About ..................................................................................... i What I Need to Know .............................................................................................. ii How to Learn from this Module .............................................................................. .ii Icons of this Module ............................................................................................... .iii What I Know .......................................................................................................... ..iii Lesson 1: Effects of Lifestyle of the functioning of Respiratory and Circulatory System .......................................................................................... 1

What I Need to Know ........................................................................ 1

What’s New ....................................................................................... 2

What Is It ........................................................................................... 3

What’s More ...................................................................................... 6

What’s New ....................................................................................... 7

What Is It ........................................................................................... 8

What’s More…. ................................................................................. 9

What I Have Learned ........................................................................ 11

What I Can Do................................................................................... 12

Summary ............................................................................................................. 13 Assessment: (Post-Test) ................................................................................... 14 Key to Answers .................................................................................................. 15 References ....................................................................................................................................... 17

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What This Module is About

In this module, you will learn the common respiratory and circulatory diseases and to

learn practices for taking care of one’s respiratory and circulatory system. You will learn to

understand the detection, prevention and treatment on both respiratory and circulatory

diseases.

Find out as we journey together in this module and discover that practicing a healthy

lifestyle is one of the key factors for a healthy body. Since preventative measures are our first

line of defence from diseases. The best way to protect ourselves from respiratory and

circulatory diseases such as asthma, COVID-19, tuberculosis, hypertension, stroke and others

is to practice healthy lifestyle. As we progress in this module, always remember to address

the following questions: What would cause the respiratory and circulatory diseases? How

should we take care of our respiratory and circulatory systems?

What I Need to Know

At the end of this module, you should be able to:

1. Infer how lifestyle can affect the functioning of respiratory and circulatory system.

i

How to Learn from this Module

To achieve the objectives cited above, you are to do the following:

• Take your time reading the lessons carefully.

• Follow the directions and/or instructions in the activities and exercises diligently.

• Answer all the given tests and exercises.

Icons of this Module

What I Need to This part contains learning objectives that

Know are set for you to learn as you go along the

module.

What I know This is an assessment as to your level of

knowledge to the subject matter at hand,

meant specifically to gauge prior related

Knowledge

What’s In This part connects previous lesson with that

of the current one.

What’s New An introduction of the new lesson through

various activities, before it will be presented

to you

What is It These are discussions of the activities as a

way to deepen your discovery and under-

standing of the concept.

What’s More These are follow-up activities that are in-

tended for you to practice further in order to

master the competencies.

What I Have Activities designed to process what you

Learned have learned from the lesson

What I can do These are tasks that are designed to show-

case your skills and knowledge gained, and

applied into real-life concerns and situations.

ii

What I Know (Pre-test)

Take the pre-test before proceeding in the lessons. Check your answers from the answer key at the end of the module. I. Multiple Choice. Direction. Encircle the letter of the best answer. 1. Which of the following is another name for the flu?

A. Pneumonia B. Asthma C. Influenza D. Tuberculosis 2. How virus infection can be spread directly? A. Taking a bath regularly B. Sneezing, coughing and talking C. Washing of hands thoroughly D. Taking vitamins and minerals 3. Which one of these is NOT a disease in circulatory system?

A. Stroke B. Asthma C. Hypertension D. Heart Attack 4. Which of the following is called the silent killer because it typically has no symptoms?

A. Stroke B. Atherosclerosis

C.Heart Attack D. Hypertension 5. Which of the following is the best form of physical exercise? A. Playing computer games B. Playing chess C. Jogging D. Watching TV 6. Which of the following defines stress? A. Just a normal part of human life. B. Body’s reaction to controllable situation. C. Situation that is not harmful. D. It is a body’s reaction to physical or emotional tension. 7. Which of the following will benefit our body in eating a balanced diet?

A. It improves body’s health and reduces diseases. B. It can leads to depression. C. We are feeling empty and stress. D. Our body will become malnourished. 8. What are some things you can do to help support your lungs health? A. Smoking regularly B. Drink alcohol excessively C. Regular exercise and balanced diet D. Stress all the time 9. Which of these best describe what a personal hygiene is? A. Having a shower but wearing the same clothes B. Washing your hands C. Using soap to clean yourself D. Both B and C 10. How can you make good choices and stay healthy? A. Consult health professionals when you are not feeling well. B. Use internet to diagnose and treat yourself. C. Buy over the counter medications. D. Listen to anybody that gives you advices.

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What I Need to Know

At the end of the lesson, you will be able to: 1. Identify common respiratory and circulatory diseases. 2. Describe the causes of the common respiratory and circulatory diseases. 3. Identify practices that promote healthy lifestyle.

1

Lesson

Effects of Lifestyle on the

Functioning of Respiratory and

Circulatory System

1

What’s New

Respiratory and circulatory diseases are common. Both of these diseases are easily treated, while others may cause severe illness or death. If any part of the respiratory and circulatory system is not working properly, a human being can have diseases and if not treated early and properly this may lead to death. Many times, people are more likely to get respiratory and circulatory diseases, but environmental exposure could also play a big role. Activity 1.Common Diseases of Respiratory and Circulatory System Objective: To identify common diseases of respiratory and circulatory system Let’s begin by knowing the important players in this topic. In the KWL chart below, fill in the K, W and L column with what you already know, what you want to know about common disease of respiratory and circulatory system and what you have learned about the lesson.

2

Common Diseases of Respiratory and Circulatory System

Things that I KNOW

A. Respiratory Diseases 1. _______________ 2. _______________ 3. _______________ B. Circulatory Diseases 1. _______________ 2. _______________ 3. _______________

Things that I WANT TO KNOW

Things that I have LEARNED

Asthma

Heart Attach Tuberculosis

Stroke

Influenza

Hypertension

What Is It

Respiratory disease that affect your airways and lungs caused by infection, smoking cigarettes or by breathing in second hand cigarette smoke, or other forces of air pollution.

There are diseases associated with the respiratory system. Some of these are

discussed below.

1. Asthma – is a condition when a person experiences difficulty in breathing as a

result of the narrowing and swelling of the bronchial airways. This can be triggered by

allergies brought by pollens, dust, fumes, and certain foods and medications, air

pollutants and bacteria.

2. Common Cold – is among the most common respiratory disease. This is a disease

affecting the upper respiratory tract (nose and throat). It is transmitted by virus infected

airborne droplets or by direct contact with infected secretions.

3. Pneumonia – is the infection of the lungs caused by viruses and bacteria wherein

the alveoli in the lungs are inflamed and become filled with liquid and pus making it

difficult for the lungs to transfer oxygen to the blood. If not treated immediately this

serious medical condition can lead to death.

4. Influenza – is commonly called the flu. It is caused by the influenza virus that

attacks your throat, nose and lungs. It is a highly contagious disease and can spread

directly through air droplets when people with flu sneeze, cough or talk and spread

indirectly with objects contaminated with virus.

5. Bronchitis - is the inflammation or swelling of bronchial tube lining. Person with

bronchitis may experience breathing difficulty because of the mucus or phlegm forms

in the airways obstructing the flow of oxygen into the lungs.

6. Tuberculosis (TB) – is a bacterial infections of the lungs caused by mycobacterium

tuberculosis, which is an airborne disease that can spread from person to person

through respiratory droplets via coughing and sneezing. This may cause death if not

treated early and properly.

7. Coronavirus disease 2019 (Covid-19) - is a serious global infectious disease

caused by a new strain of coronavirus that infect both people and animals. The virus

passes through the nose, sinuses, and throat and reached the lungs. It can spread the

same way with other coronaviruses mainly through person-to-person contact by

respiratory droplets and through contact with contaminated objects.

3

Like all other system in our body, respiratory and circulatory is vulnerable to

conditions and diseases.

Circulatory Disease is an interruption, blockage, or diseases that affect how

you heart or blood vessels pump blood. Diseases of the blood vessels and the heart

are known as cardiovascular diseases. There are ways to prevent circulatory

diseases by living a healthy lifestyle. Here are some of the common conditions

affecting the circulatory system:

1. Atherosclerosis – is a condition that develops when a substance called plaque

builds up in the walls of the arteries making it harder for blood to flow through. If a

blood clot forms, it can block the blood flow that can cause heart attack or stroke. The

risk factors for this diseases are smoking, eating food high in fats, excessive

alcohol intake, diabetes and increased stress.

2. Stroke – occurs when it damages the brain when a blood vessels gets blocked or

leaked usually from a blood clot. Some risk factors for stroke include smoking, high

blood pressure, excessive alcohol intake and diabetes.

3. Hypertension – is another name for high blood pressure. It can lead to severe

health complications. Is also known as the silent killer due to the fact that people with

hypertension usually has no symptoms. The causes of this disease includes obesity,

diabetes, lack of fruits and vegetables in the diet and high salt intake.

4. Heart attack – occurs when the blood flow to the part of the heart is blocked by

blood clot, the heart muscle supplied by the artery begins to die. The causes for the

heart attack are atherosclerosis, diabetes, high-blood pressure and gender (more

common in males).

4

Prevention on both respiratory and circulatory disease is always better than

their treatment. Diseases of both respiratory and circulatory system should not be

taken for granted because they can be deadly. With the right treatment of these

diseases it can saved the patients’ lives.

The following are some ways to prevent respiratory and circulatory diseases:

1. Good nutrition, good sleep and rest enhances your immune system that helps

the body to resist infections. And avoid eating high cholesterol and fatty foods.

2. Do not smoke. Cigarettes contain harmful substances that can be fatal to your

body.

3. Exercise regularly. It improves the health of your lungs and heart.

4. Observe strict personal hygiene. Always keep your body clean because it will

reduce the risk of catching any diseases.

5. Avoid crowds. Avoid direct contact with person suffering from respiratory

diseases. To avoid contamination it is very important to take all the necessary

precautions.

5

What’s More

Write the term that is being described below to complete the sentence. Choose the correct word inside the box.

_________1.is the inflammation or swelling of bronchial tube lining. _________2. is caused by a virus that attacks your throat, nose and lungs. It is a highly

contagious disease and can spread directly through air droplets and spread indirectly

with objects contaminated with virus.

_________3. is a condition when a person experiences difficulty in breathing as a

Result of the narrowing and swelling of the bronchial airways.

_________4. Occurs when the blood flow to the part of the heart is blocked by blood

clot, the heart muscle supplied by the artery begins to die.

_________5. is a condition that develops when a substance called plaque builds up

in the walls of the arteries making it harder for blood to flow through.

_________6. is a bacterial infection that can spread from person to person through

respiratory droplets via coughing and sneezing.

_________7.is another name for high blood pressure. The causes of this disease

includes obesity, diabetes, lack of fruits and vegetables in the diet and high salt intake.

_________8. is part of a family of viruses called corona viruses that infect both

people and animals. It can affect nose, sinuses, throat and lungs.

_________9. is among the most common respiratory disease. This is a disease

affecting the upper respiratory tract (nose and throat).

.

_________10. is the infection of the lungs caused by viruses and bacteria wherein the

alveoli in the lungs are inflamed and become filled with liquid and pus making it difficult

for the lungs to transfer oxygen to the blood.

6

Hypertension Covid-19 Atherosclerosis Heart attack Common Cold Pneumonia Bronchitis Influenza Tuberculosis Asthma

What’s New

What you eat or activity each day affects your health and how you feel now and

in the future. To maintain a healthy and functional body, it is important to take care of

them properly. Lifestyle is define as someone’s way of living that

a person or particular group of people usually do. Lifestyle has a direct effect on the

organs of the respiratory and circulatory system.

Let’s find out if we have a common understanding of what one of the important

terms in this lesson mean and that is the effect of lifestyle on the respiratory and

circulatory system. Let’s begin with the activity below.

Activity 2. Healthy and Unhealthy Lifestyle Objective: To identify practices that promotes healthy lifestyle. Direction: Choose the following lifestyle from the box that should go under the column “healthy” or “Unhealthy” lifestyle.

Healthy Lifestyle Unhealthy Lifestyle

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Eat fruits and vegetables Drinking too much alcohol Smoke cigarettes High fat and high sugar diet Get Enough sleep Exercise regularly Eat junk foods Have time to relax

Observe strict personal hygiene Not drinking enough water

What Is It

In the previous activity, you were asked to identify the basis in determining whether healthy lifestyle is done or not. There is a direct effect of lifestyle on the organs on both respiratory and circulatory systems. Among the cause of these diseases, four causes may be observed: cigarette smoking, excessive alcohol intake, stress and high level of fat and cholesterol in the blood. Knowledge on the symptoms of both respiratory and circulatory disease is important for its treatment. When symptoms occur, the best thing to do is consult a doctor when symptoms of common respiratory and circulatory diseases persist. There are different reasons why some people smoke. But whatever the reasons are, smoking is surely not good for the health. Cigarettes contain harmful substances that cause respiratory and circulatory diseases. Cigarettes contain nicotine, carbon monoxide and tar. Nicotine is an addictive substance that increases heart rate and blood pressure. Tar is a carcinogen (substance that causes cancer) that coats the teeth, damages the gums, numbs the taste buds and causes bad breath. Carbon monoxide is toxic to the body that prevents haemoglobin to carry the oxygen in the blood throughout the body.

One of the risk factor of heart problems is caused by smoking because it weakens the heart, increased blood pressure and constricts the blood vessels. Passive smoking (second hand smoker) which is involuntary inhaling cigarette

smoke from cigarette smokers, poses a great risk of having respiratory and circulatory diseases especially in children.

Excessive alcohol will increases triglycerides in the blood and influence calorie

intake. Stresses especially work related stress and emotional stress decreases the

resistance to heart disease that lead to hypertension. When a person is under stress

is more likely to smoke and tends to overeat.

When it comes to food, a high fat and high cholesterol diet, has been found to

have adverse effect to the lungs and heart. It may lead to obesity, which in turn

increases the risk of having respiratory and circulatory diseases.

Here are some ways to have a healthy lifestyle:

1. Exercise regularly is important to maintain a healthy body system that makes our

lungs and heart stronger.

2. Do not smoke and drink alcohol. If you are thinking of starting smoking and alcohol

drinking, do not! Stay away from people who do this habit.

3. Eat a healthy diet. Proper diet enables a person to maintain a healthy weight which

is important in keeping the respiratory and circulatory organs healthy.

4. Take time to relax and avoid stress because it affects the conditions of our

respiratory and circulatory system.

8

What’s More

Activity 3: Who’s Doing Good or Bad for the lungs and heart?

Objective:

To identify lifestyles that has an effectto the respiratory and circulatory systems.

Study each picture that shows lifestyles that are either good or bad for your

respiratory and circulatory system. Write your explanation on the lines provided.

And answer the guide questions that follow. Make a short explanation for your

answer.

1.

2.

3.

4.

9

Guide Questions:

1. Why should you take care of the respiratory and circulatory system?

2. How does smoking affect one’s health?

3. How does exercise prevent heart disease?

4. How does unhealthy lifestyle shorten one’s life?

10

What I Have Learned

A. Fill the diagram with the correct information.

Diseases Risk factors/Causes Preventive Practice

Example: Influenza Influenza virus washing your hands often

1. Hypertension

2. Stroke

3. Pneumonia

4. Tuberculosis

5. Covid-19

B. True or False. If the statement is true, draw ☺ before the numbers. If false,

draw _______1.Diseases of the blood vessels and heart are known as respiratory diseases. ________2.Covid 19is a serious global infectious disease caused by a new strain

of coronavirus.

________3.Lifestyle has a direct effect on the organs of the respiratory and

circulatory system.

________4.Unhealthy lifestyle give your body the best chance to fight virus and

bacteria.

________5. Consult a doctor when symptoms of common respiratory and circulatory

diseases persist.

C. Figure out the outcome of the situation below:

Christina’s father is a smoker. She noticed her father smokes almost every day when he is under stress. She also observed that every time her father is smoking the whole family is present most of the time. How might this habit of her father affect the health of her family? Explain.

11

What I Can Do

Activity 4: Negative vs. Positive Impact Objective: To determine the items has a negative or positive impact on the spread of disease. In this activity you will indicate which items or item has positive or negative impact on the individual. How does this affect our health? Are we using more or less of the items? Compare the items presented with items available to us today? Record your answer on the table provided. 1. Determine whether the item helps prevent or spread disease or have no impact and why? Check the corresponding box.

Items Disease Spreading

Disease Preventing

No impact

Why

1. Soap

2. Alcohol

3. Toilet Seat

4. Picture of pollution

5. Picture of person coughing

6. Face mask

7. Ads for anti-viral drugs

8. Iodine salts

9. Vitamins and Minerals

10. Social Distancing

2. Determine which item had the greatest positive impact on health and why?

3. How does use of these items today affect our personal health?

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Summary

The diseases of the respiratory system include asthma, common cold, pneumonia, bronchitis, rhinitis, emphysema and tuberculosis.

Asthma is a condition when a person experiences difficulty in breathing.

Common Cold is among the most common respiratory disease. This is a

disease affecting the upper respiratory tract (nose and throat).

Pneumonia is the infection of the lungs caused by viruses and bacteria wherein

the lungs are inflamed and become filled with liquid and pus.

Influenza is commonly called the flu. It is caused by the influenza virus that

attacks your throat, nose and lungs.

Bronchitis is the inflammation or swelling of bronchial tube lining.

Tuberculosis (TB) is a bacterial infections of the lungs caused by

mycobacterium tuberculosis, which is an airborne disease.

Covid 19 is a serious global infectious disease. It is part of a family of viruses

called corona viruses. It can affect nose, sinuses, throat and lungs.

The diseases of the circulatory system include atherosclerosis, stroke,

hypertension and heart attack.

Atherosclerosis is a condition that develops when a substance called plaque

builds up in the walls of the arteries making it harder for blood to flow through.

Stroke occurs when it damages the brain when a blood vessels gets blocked

or leaked usually from a blood clot.

Hypertension is the other name for high blood pressure.

Heart attack occurs when the blood flow to the part of the heart is blocked by

blood clot, the heart muscle supplied by the artery begins to die.

For prevention for both respiratory and circulatory diseases observe strict

personal hygiene, eat healthy foods, avoid smoking, exercise regularly and

avoid direct contact with infected person and contaminated objects.

Lifestyle is define as someone’s way of living that a person or particular group

of people usually do.

Four lifestyles may be observed that lead to respiratory and circulatory

diseases: smoking, excessive alcohol intake, stress and high level of fat and

cholesterol in the blood.

Smoking is not good for the health. Cigarettes contain nicotine, carbon

monoxide and tar. Excessive alcohol will increase triglycerides in the blood and

induces calorie intake.

Stresses are caused by work related stress and emotional stress that

decreases the resistance to heart disease. A diet high in fat and cholesterol

poses a great risk to the organs of respiratory and circulatory system.

Ways to have a healthy lifestyle is to exercise regularly, avoid smoking and

drinking alcohol, eat a healthy diet and take time to relax and avoid stress.

13

Assessment: (Post-Test)

It is now time to evaluate your learning. Check your answers from the answer key at the end of the module. I. Multiple Choice. Direction. Encircle the letter of the best answer. 1. Which respiratory diseases can be triggered by allergies brought by pollens, dust,

fumes, certain food and medications, air pollutants and bacteria?

A. Asthma B. Emphysema C. Rhinitis D. Tuberculosis

2. Which of these diseases that a person may experience breathing difficulty because

of the mucus or phlegm forms in the airways obstructing the flow of oxygen into the

lungs?

A. Common cold B. Asthma C. Bronchitis D. Influenza 3. Which of the following diseases is caused by family of viruses called corona viruses

that infect both people and animals?

A. Influenza B. Asthma C. Common cold D. Covid 19 4. What circulatory diseases are caused by atherosclerosis, diabetes, high blood pressure and gender (more common in males). A. Heart Attack B. Atherosclerosis C. Stroke D. Hypertension

5. Which of these diseases are caused by smoking, high blood pressure, excessive

alcohol intake and diabetes?

A. Hypertension B. Stroke Atherosclerosis D. Heart Attack 6. What substance is toxic to the body that decreases the hemoglobin in the organs of the body and prevents hemoglobin to carry the oxygen in the blood? A. Nicotine B. Tar C. Carcinogen D. Carbon monoxide

7. What addictive substance that increases heart rate and blood pressure? A. Tar B. Caffeine C. Nicotine D. Carbon monoxide

8. What type of smoking does inhaling cigarette smoking from cigarette smokers that found to have adverse effects to the persons lungs and heart? A. Active smoking B. Passive smoking C. Transitional smoking D. Collective smoking

9. Which of the following is define as someone’s way of living that a person or particular group of people usually do. A. Stress B. Exercise C. Lifestyle D. Smoking 10. Which of the following unhealthy lifestyle that will increase triglycerides in the blood

and induces calorie intake?

A. Smoking B. Stress C. High fat diet D. Excessive alcohol

14

Key to Answers

What I know- Pretest (iii)

1. C 2. B 3. B 4. D 5. C 6. D 7. A 8. C 9. D 10. A

What’s More (p.6)

1. D 2. I 3. J 4. G 5. B 6. E 7. A 8. F 9. C 10. H

What’s More (p.8) A. 1-4 Answers may vary B. Process Questions: 1. Answers may vary 2. Answers may vary. Sample answer. Exercise regularly and eat balanced diet. 3. Answers may vary. Sample answer. Smoking is not good for the health. Cigarettes contain harmful substances that cause respiratory and circulatory diseases. Cigarettes contain nicotine, carbon monoxide and tar. Nicotine is an addictive substance that increases heart rate and blood pressure. Tar is a carcinogen (substance that causes cancer) that coats the teeth, damages the gums, numbs the taste buds and causes bad breath. Carbon monoxide is toxic to the body that decreases the haemoglobin in the organs of the body and prevents haemoglobin to carry the oxygen in the blood. 4. Answers may vary. Sample answer. Unhealthy lifestyle may cause more diseases which could shorten one’s life. What I Have Learned (p.11) A.

Diseases Risk factors/Causes Preventive Practice

Example: Influenza Influenza virus washing your hands often

1. Pneumonia

Viruses and bacteria Answers may vary. Sample answer. Avoid smoking

2. Tuberculosis

Mycobacterium

tuberculosis

Answers may vary. Sample answer. Avoid exposure to person with TB.

3. Covid-19

a family of viruses

called corona viruses

Answers may vary. Sample answer.

Observe strict personal hygiene.

4. Stroke

smoking, high blood pressure,

excessive alcohol intake and diabetes

Answers may vary. Sample answer. Exercise regularly and eat balanced diet.

5. Hypertension

Obesity, diabetes, lack of fruits and

vegetables in the diet and high salt

intake.

Answers may vary. Sample answer. Avoid stress. Have time to relax.

15

B. 1. False 2. True ☺ 3. True ☺ 4. False 5. True ☺

C. Christina’s father is a passive smoker. Being a passive smoker it increases the person who smoke being risk of acquiring both respiratory and circulatory disease. The result of substance exposure like second hand smoking will have detrimental effects on the body. Assessment: Post-Test (p.14)

1. A 2. C 3. D 4. A 5. B 6. D 7. C 8. B 9. C 10. D

16

References Campbell, Neil A. 2004. Biology. A Francisco. Cummings Publishing.

Department of Education. OHSP Learning Module Respiratory and Circulatory

System.

Department of Education. EASE Module 2Respiratory and Circulatory System.

https://www.dmu.edu/medterms/respiratory-system/respiratory-system-diseases/

https://www.gavi.org/vaccineswork/what-is-covid-19-and-how-does-it-spread https://www.livescience.com/22486-circulatory-system.html https://www.foundationforpn.org/living-well/lifestyle/

Parker, Steve. 2004. Human Body. London. DK Children Publishing.

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DepEd Division of Iligan City

Office Address:General Aguinaldo, St., Iligan City

Telefax:(063)221-6069

E-mail Address: iligan.city@deped.gov.ph