Cardiovascular System

2. One of the functions of the cardiovascular system. Helps to regulate ….
4. The heart is an involuntary muscles made up of …… muscle.
7. Hollow, muscular organ that pumps blood throughout the body
10. Consists of the heart, blood vessels, and blood
12. Blood that travels to body and back to the heart
14. The liquid part of blood
15. Place where substances are exchanged between the blood and body cells
16. The amount of blood pumped by the heart per minute
18. Blood vessles that carry blood away from the heart
20. A force exerted by blood against the walls of blood vessels
22. Blood vessels increase in diameter to accommodate increased blood flow during exercise. This is known as
23. Lower chambers of the heart (singular)

1. Take up oxyhgen in the blood and deliver it to cells elsewhere in the body
3. Blood that travels to lungs and back to the heart
5. Largest artery in the body
6. The body's disease fighters
8. The alternating expansion and relaxation of the artery walls
9. A flap of tissue that prevents blood from flowing backward
11. Blood vessles that carry blood back to the heart
13. The process by which molecules move from an area of higher concentration to an area of lower concentration
17. The amount of blood pumped by each beat of the heart.
19. A molecules within the blood that blinds with oxygen and transports it around the body
21. Upper chambers of the heart (singular)