The Heart Worksheet

1. All vertebrates have what type of circulatory system?

All vetebrates have a closed circulatory system.

2. How does the circulatory system maintain homeostasis?

Water and eletrcolyte transport, fluid volume control, and reuglation of pH and of body temperature.

3. Name 4 functions of the circulatory system.

Transport dissolved nutrients throughotu the body, carries hormones, transports gases like oxygen to and from cells, maintain homeostasis, and produces and carries antibodies.

4. What are blood vessels that carry blood away from the heart called?

Ateries

5. What are blood vessels that carry blood to the heart called?

Veins

6. What is the sac that surrounds the heart called?

Pericardium

7. What is the muscular portion of the heart called?

The myocardium

8. What is the lining of the myocardium called?

The endocardium

9. What is the name of the upper cavities of the heart? The lower cavities?

The upper cavities are the atria and teh lower cavities are called ventricles.

10. What veins carry blood to the left atrium? The right atrium?

The superior vena cavae and the inferior vena cavae carries blood to the right atrium. The pulmonary vein carries blood to the left atrium.

11. What arteries carry blood away from the left ventricle? The right ventricle?

The aorta carries blood away from the left ventricle and the pulmonary artery carries blood away from the right ventricle