Unit 9 Study Guide

Heart Study Guide:

1. What is the purpose of the cardiovascular system?

The purpose of the cardiovascular system is to transport blood and oxygen throughout your body and to remove the waste products also.

2. Where is the heart located?

The heart is located just behind and slightly to the left of the breastbone.

3. What is the shape of the heart?

The heart is shaped like an inverted cone.

4. What is the size of the heart?

The heart is about the size of a fist.

5. Name the three layers of the outer layer of the heart.

The three layers of the heart is the epicardium, myocardium, and the endocardium.

6. What does the pericardium consist of? What is the outer layer of the pericardium called?

The pericardium consists of fibrous tissue and the outer layer is called the parietal pericardium.

7. Name the 4 chambers of the heart.

The four chambers of the heart are called the left and right atrium and the left and right ventricle.

8. What valve lies between the right atrium and the right ventricle?

The tricuspid valve lies between the right atrium and the right ventricle.

9. What valve lies between the left atrium and the left ventricle? Why does this valve close?

The mitral valve lies between the left atrium and left ventricle. This valve closes so the blood will not flow back into the atrium.

10. What large veins supply blood to the right atrium?

The Superior Vena Cava and the Inferior Vena Cava supply the blood to the right atrium.

11. Where does the blood come from when entering the right atrium?

The blood comes from your body to be replenished with oxygen to repeat the process again

12. What do veins do?

Veins are branching blood vessels that carry blood toward the heart.

13. What do arteries do?

Arteries are the branching system of muscular, elastic blood vessels that carry...