The heart

1. All vertebrates have what type of circulatory system?
2. How does the circulatory system maintain homeostasis?
3. Name 4 functions of the circulatory system.
4. What are blood vessels that carry blood away from the heart called?
5. What are blood vessels that carry blood to the heart called?
6. What is the sac that surrounds the heart called?
7. What is the muscular portion of the heart called?
8. What is the lining of the myocardium called?
9. What is the name of the upper cavities of the heart? The lower cavities?
10. What veins carry blood to the left atrium? The right atrium?
11. What arteries carry blood away from the left ventricle? The right ventricle?