1. Internal Anatomy

2. Circulatory System Organs
Heart = major organ
Heart is made up of THREE muscle layers:
myocardium – makes up the thickness of the heart, main heart muscle
endocardium- thin layer inside myocardium
Epicardium – thin cover over the myocardium
Other parts to CS:
Arteries
Capillaries
Vein
Blood
CS Roles:
Move nutrient, metabolic waste, and oxygen around
protection against microbes and injury.

3. Excretory System Organs
Kidneys & Bladder
rids the body of waste.
maintain chemical composition, volume of blood, and tissue fluid

4. Digestive System Organs
Stomach & Intestines
breaks the food down into smaller pieces to be used by the body
Nutrients are absorbed from these food materials

5. Respiratory System Organs
Lungs
oxygen is taken in by the nose, passed on to the lungs and then goes into the blood

6. Nervous System Organs Brain, Spinal Cord, & Nerves
The coordinator of all body activities
Regulates other systems
Controls memory and learning

7. Reproductive System Organs
Ovaries (female) & Testes (male)
produce new individuals of the same species
Ovaries produce eggs
Testes produce sperm

8. Muscular System Muscles Give the body its movement, posture, & support
Produce heat