The Circulatory System

1. / another name for the vocal chords
3. / _____ blood cells are the second line of defense, in the immune system, and travel in the blood steam, destroying bacteria and viruses by engulfing them.
6. / The main organ in the cardiovascular system that pumps blood though out the body.
9. / The ___________ system and the cardiovascular system are both included in the circulatory system.
10. / The _____ lung is slightly smaller to make room for the heart.
11. Dioxide / Waste product released out of the blood stream and out the lungs.
13. / Very thin blood vessels that connect arteries and veins, and also serve as oxygen exchange areas.
14. / The main artery connected to the heart that carries oxygenated blood to the body.
15. / and important concept in the circulatory system. The idea of a high concentration of a substance moving to to a lower concentration of the same substance.
16. Circulation / The process of the movement of blood traveling from the heart to the lungs, to rid of CO2 and receive oxygen, and back to the heart.

2. / Blood vessels that carry oxygenated blood away from the heart and to tissues in the body. A for Away.
4. / Blood consists of 55% of_____.
5. / The name of the two lower chambers of the heart.
7. / The ___________ system connects all of the other body system together, by supplying their tissues with nutrients and oxygen.
8. / Blood vessels that carry deoxygenated blood towards the heart.
9. Blood Cells / Cells in the blood that are in charge of carrying oxygen on other nutrients through the blood stream.
12. pressure / A healthy __________________ is around 120 / 60.
17. / The main organs of the respiratory system.
18. / The _____ cavities are the main entry way for air to enter the body: either through the oral cavity (mouth) and the nose.
19. Atrium / Attached to the superior and inferior vena cava, and receives oxygen-lacking blood. (One of the four cavities of the heart)