|
1) The number of red blood cells that die every day is a. 100 thousand b. 200 thousands c. 100 million d. 200 million
|
||||
|
2) The walls of veins are not thick as those of arteries because a. the blood is in less quantity b. the blood is deoxygenated c. the blood is low pressured d. the blood is thicker
|
||||
|
3) Deoxygenated blood is carried by a. arteries b. veins c. capillaries d. nerves
|
||||
|
4) In 1 mm3, the number of platelets is a. 100000 b. 150000 c. 200000 d. 250000
|
||||
|
5) The dissolved food is taken from a. liver to cells b. stomach to cells c. lungs to cells d. heart to cells
|
||||
|
6) Converted glucose is stored in a. pancreas b. spleen c. liver d. gall bladder
|
||||
|
7) The function of the valves is to a. transfer the blood from atria to ventricles b. stop the backflow of blood c. help chambers to contract d. help chambers to relax
|
||||
|
8) In one complete round of circulation, blood comes to heart a. only once b. two times c. three times d. four times
|
||||
|
9) Carbon dioxide and other toxic waste is carried into blood by a. red blood cells b. white blood cells c. plasma d. platelets
|
||||
|
10) The walls of arteries are thick because of a. huge amount of blood b. pressure of blood c. gravity d. highly oxygenated blood
|
||||
