Life Topic 4 Lesson 4

1. pressure The force with which ventricles of the heart contract is what creates
2. respiration ___________is the process cells use to break down glucose in order to produce energy
5. The main organs of _________ the system are the kidneys, urinary bladder, urethra, lungs, skin, and liver.
6. system an organ system that transports needed materials to cells and removes wastes
10. a tiny blood vessel where substances are exchanged between the blood and the body cells
14. respiration __________is the process cells use to break down glucose in order to produce energy.
15. The main structure of the circulatory system is the
17. two bean-shaped organs that filter and regulate the amount of water in the body
21. ________ is the exchange of gases between the inside and outside of the body.
22. a blood vessel that carries blood back to the heart

1. the two passages that direct air into the lungs
3. the process by which wastes are removed from the body
4. ___________ is the exchange of gases between the inside and outside of the body
7. Red blood cells take up ________ in the lungs and deliver it to cells throughout the body.
8. tiny sacs of lung tissue specialized for the movement of gases between air and blood
9. fluid that travels through the lymphatic system consisting of water, white blood cells, and dissolved materials
11. a blood vessel that carries blood away from the heart
12. The lymphatic system is a network of vessels that returns ________to the bloodstream
13. Your heart beats around 100,000 times a
16. nodes small knobs of tissue that are connected to lymph vessels
18. Oxygen and other materials move through capillary walls. In ________, materials move from an area of high concentration to one of lower concentration.
19. small filtering structure found in the kidneys that removes wastes from blood and produces urine
20. Sweat contains a small amount of _________