Pulmonary artery Pulmonary vein Left atrium Left Ventricle Aorta Vena Cava Right Atrium Right...
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Transcript of Pulmonary artery Pulmonary vein Left atrium Left Ventricle Aorta Vena Cava Right Atrium Right...
The Cardiovascular System
Pulmonary artery
Pulmonary vein
Left atrium
Left Ventricle
Aorta
Vena Cava
Right Atrium
Right Ventricle
By the end of this topic you should be able to:◦Identify the functions of the Cardiovascular
system
◦Describe the immediate effects of exercise on the Cardio-vascular system.
Objectives
Heart RateStroke VolumeCardiac OutputBlood Pressure
Cholesterol
Key Terms
Using your text book to help you, complete your task sheet.
Be prepared to feedback to the group on your findings
Task
Heart Rate (HR)
Stroke Volume (SV)
Cardiac Output
Key terms
Heart rate (HR)
Heart Rate◦ The number of times the heart
beats per minute (bpm)◦ Can vary considerably from person
to person,◦ Average resting HR = 72 bpm
Elite athlete e.g Lance Armstrong, Steve Redgrave, Paula Radcliffe can have significantly lower resting HR’s.
Max Heart Rate◦ 220 - age
Stroke Volume (SV) The volume of blood ejected from the heart
in one heart beat. At rest:
◦ approx 80ml During exercise:
◦ up to 130ml
Cardiac Output (Q) The amount of blood ejected from the heart
in one minute
Cardiac Output = Heart Rate x Stroke Volume
Q
HR SV
You have 5 minutes to research the following key term, before feeding back to another member of the group.
Blood pressure (pg 117 & 121)
OR
Cholesterol (pg 123)
Task
Make sure you know how the exercise effects your key term. (Blood pressure/Cholesterol)
The force exerted by circulating blood on the walls of the blood vessels.
Systolic BP◦ The maximum pressure in the arteries when the hearts
contracts and pushes blood out through the aorta into the body.
Diastolic BP◦ The pressure of the blood during the relaxation phase
between heart beats.
Blood Pressure (BP)
Average Blood pressure is 120/80mmHg
Cholesterol• Cholesterol is a fatty substance
carried in the blood by lipoproteins.• Lipoproteins come in 2 forms:–High Density (HDL)– Low Density (LDL)
• HDL contains more protein than fat & is referred to ‘good cholesterol’ because it carries cholesterol away from the arteries to the liver which removes it.
• LDL consists of mainly fat. It is the major cause of cholesterol in the blood, & it can lead to a build up of plaque which can restrict blood flow in the arteries.– Blockages result in an increase in blood pressure
By the end of this topic you should be able to:◦Identify the functions of the Cardiovascular
system
◦Describe the immediate effects of exercise on the Cardio-vascular system.
Objectives
Heart RateStroke VolumeCardiac OutputBlood Pressure
Cholesterol
Key Terms
Produce a table that shows:◦ The immediate effects of exercise on the CV
system◦ The effects of regular exercise on the CV system
Homework
Immediate effects of exercsie
Effects of regular exercise
Increased HR Decreased resting Heart Rate