Heart and Circulatory System – Video Questions

Watch the video and answer the questions in short sentences.
 1. What is the main function of the heart?
 2. Approximately how many times does the heart beat in one day?
 3. How many chambers does the heart have? Name them.
 4. Which side of the heart receives blood returning from the body?
 5. Which chamber receives this blood first?
 6. Where does blood go after leaving the right atrium?
 7. Which blood vessels carry blood from the heart to the lungs?
 8. What happens to the blood in the lungs?
 9. Which chamber receives blood returning from the lungs?
10. Which chamber pumps blood around the body?
11. What is the function of the heart valves?
12. Name the four heart valves shown in the video.
13. Which valve is located between the right atrium and the right ventricle?
14. Which valve is located between the left atrium and the left ventricle?
15. What happens during systole?
16. What happens during diastole?
17. What is the function of the coronary arteries?
18. What makes the heart muscle contract in a coordinated way?