Lab Activity 1

Language of Anatomy

Pg 13-16

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Anatomy

• Gross anatomy: the study of body structures visible to the naked eye (without a microscope)

• Microscopic anatomy: • Cytology: Analysis of the internal structures of

individual cells• Histology: examination of tissues (groups of

specialized cells that work together to perform a specific function.

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Anatomical Position

• Anytime you describe structures relative to one another, you must assume this standard position:

• Body erect• Feet slightly apart• Palms facing forward• Thumbs point away from body

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Anterior Landmarks

Pg number 15

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PosteriorLandmarks

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Body Orientationand Direction

• These are relative positions• Proximal

• Closer to the point of origin

• Distal• Farther from the point of

origin

• Medial• Medial is closer to the

midline

• Lateral• Farther away from the

midline

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Body Orientation and Direction

• Dorsal or Posterior:• Toward the Back

• Ventral or Anterior:• Toward the Front

• Superior or Cephalad• toward the head

• Inferior or Caudal:• toward the feet

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Planes of the Body

Body Cavities

Pgs 17 - 19

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• Dorsal cavity protects the nervous system

• Contains the Cranial Cavity which has the Brain and the Spinal Cavity whic1has Spinal Cord.

Dorsal Body Cavity

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Cavities

• Thoracic Cavity• Heart & Lungs

• Subdivided into the mediastinum (heart, treachea, etc.) and plural (lungs) cavities

• Lower border is the diaphragm

Cavities

• Below the diaphragm is the Abdominal and Pelvic categories.

• Abdominal CavityStomach, Liver, Intestines

• Pelvic Cavity. Reproductive organs Bladder, Rectum

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Quadrants

• RUQ• Liver

• LUQ• Spleen

• RLQ• Appendix

• LLQ• Sigmoid colon

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Abdominopelvic Regions

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Serous Membranes

• Serous Membranes have two layers

1. Parietal serosa lines internal body walls

1. Visceral serosa covers the internal organs

• Serous fluid separates the serosae

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Serous Membranes

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Serous Membranes of the Heart

Other Cavities

• Oral and digestive cavities: Mouth

• Nasal Cavity: With in the Nose

• Orbital Cavities: Eyes

• Middle Ear: Medial to the eardrum.

• Synovial Cavities: Joints

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Pages 3 -7

Levels of Organization and Organ Systems

Levels of Organization• The human body has many levels of structural

organization.

• Put in order from the simplest to most complex we have the following

20Chemical Level

Cellular Level

Tissue Level

Organ Level

Organ System Level

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Integumentary System

• Structures: Skin, hair, sweat and oil glands

• Function:• Forms external body covering• Protects deeper tissues from injury• Involved in vitamin D synthesis• Prevents desiccation, heat loss, and pathogen entry • Site of pain and pressure receptors

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Skeletal System

• Structure: 206 bones of the human body

• Function:• Protects and supports body organs• Provides a framework that muscles can use to create

movement• Hematopoiesis (synthesis of blood cells)• Mineral storage

• Bone contains 99% of the body’s store of calcium

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Muscular System

• Structures: The 600+ muscles of the body

• Function: • Locomotion• Manipulation of the environment• Maintaining posture• Thermogenesis (generation of heat)

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Nervous System

• Structures: Brain, Spinal cord,

and peripheral nerves.

• Function:• Fast-acting control system of the body• Monitoring of the internal and external environment

and responding (when necessary) by initiating muscular or glandular activity

• Information Assessment

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Endocrine System

• Structures: Hormone Secreting Glands• Pituitary, Thyroid, Thymus, Pineal,

Parathyroid, Adrenal, Pancreas, Small Intestine, Stomach, Testes, Ovaries, Kidneys, Heart

• Functions:• Long-term control system of the body• Regulates growth, reproduction, and nutrient

use among other things.

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Cardiovascular System

• Structures: • Heart, Blood vessels (arteries, veins, and capillaries)

• Functions:• The heart pumps blood thru the blood vessels.• Blood provides the transport medium for nutrients

(glucose, amino acids, lipids), gases (O2, CO2), wastes (urea, creatinine), signaling molecules (hormones), and heat.

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Lymphatic/Immune System

• Structures:• Lymphatic vessels, Lymph nodes, Spleen, Thymus,

Red bone marrow

• Functions:• Returning “leaked” fluid back to the bloodstream• Disposal of debris• Attacking and resisting foreign invaders (pathogens

i.e., disease-causing organisms)• Absorption of fat from the digestive tract

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Respiratory System

• Structures:• Nasal cavity, pharynx, trachea, bronchi, lungs

• Functions:• Constantly supply the blood with O2, and remove

CO2

• Regulate blood pH

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Digestive System

• Structures:• Oral cavity, esophagus, stomach, small intestine,

large intestine, rectum, salivary glands, pancreas, liver, gallbladder

• Functions:• Ingestion and subsequent breakdown of food into

absorbable units that will enter the blood for distribution to the body’s cells

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Urinary System

• Structures:• Kidneys, ureters, urinary bladder,

urethra

• Functions:• Removal of nitrogenous wastes• Regulation of body’s levels of water, electrolytes,

and acidity

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Reproductive System

• Structures:• Male:

• Testes, scrotum, epididymis, vas deferens, urethra, prostate gland, seminal vesicles, penis

• Female:• Ovary, uterine tube, uterus, cervix, vagina, mammary

glands

• Functions:• Making Babies

Lab Activity 3

The Microscope

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Care of the Microscope

1. When transporting microscope, hold in upright position with one hand on the arm and the other supporting the base 

2. Only use lens paper to clean the lens. NEVER USE KIMWIPES.

3. Always begin the focusing process with the lowest-power objective and change to higher-power lenses as necessary. 

• Use fine focus only for adjustment

4. Use coarse adjustment knob only with the lowest power objective lens

5. Always use a coverslip with temporary preparations

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Putting Microscope Away

1. Remove slides from stage and place in appropriate place

2. Rotate the lowest-power objective lens into position

3. Move stage to the lowest position4. Turn down light brightness5. Turn off power6. Wipe microscope (not the lens) with

Kimwipes or alcohol wipe if needed7. Wrap the cord neatly around the base8. Lock the cabinet

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The End