Formed elements quiz

21. Each hemoglobin molecule transports how many O2 molecules? a. 1 b. 4 c. 100s d. millions

4

2. Which of these would be closest to a normal safe adult hematocrit ? A. 45%. B. 65%. C. 75%. D. 85%.

45%

8. What hormone, released by the kidney, encourages the production of red blood cells? A. testosterone B. ACTH. C. EPO D. ADH

EPO

10. Which of these would happen to a person who lives in Radford, but then vacations in the Rocky Mountains, at 10000 feet above sea level? A. a drop in oxygen levels in the air he breathes B. the release of more erythropoietin than usual into his blood. C. a rise in his hematocrit. D. a, b, and c E. None of the answers is correct.

a, b, and c

5. Which of these is the least common type of white blood cell in a healthy human being ? a. eosinophil b. basophil c. lymphocyte d. neutrophil

basophil

19. What is the least common type of white blood cell? a. basophils b. eosinophils c. lymphocytes d. monocytes e. neutrophils

basophils

14. The function of red blood cells is to A. carry carbon dioxide from the lungs to the body's cells. B. carry oxygen from the lungs to the body's cells. C. carry nutrients from the digestive system to the body's cells. D. defend the body against infectious organisms.

carry oxygen from the lungs to the body's cells.

20. Blood, since it has a matrix between its cells, is considered to be what type of tissue? a. muscle b. nerve c. connective d. epithelial

connective

11. What is the stem cell that undergoes mitosis and can give rise to all the different kinds of blood cells? a. hemocytoblast b. erythroblasts. c. normoblasts. d. megakaryocytes.

hemocytoblast

7. What is the stem cell that gives rise to all the white blood cells? a. hemocytoblasts b. lymphoid stem cells c. myeloid stem cells d. megakaryocytes

hemocytoblasts

13. Which of these are the most common inside a red blood cell? a. plasma, so all the chemicals indicated by POWWERS b. just a big nucleus that takes up all the space c. hemoglobin d. Ca++, and enzymes and proteins that promote blood clotting

hemoglobin

9. Which of these would you know more about if you knew a person's hematocrit ? A. what clotting factors were present or absent B. how abundant the red blood cells were in the blood C. what solutes made up the plasma

how abundant the red blood cells were in the blood

16. Which of these descriptions best matches the term platelets? A. important for clotting of blood B. helper cells are one type C. produce antibodies in response to antigens D. kill bacteria using hydrogen peroxide

important for clotting of blood

6. What is the value of the mnemonic "Never Let Monkeys East Bananas"? a. it's important that monkeys don't eat bananas b. it helps one remember the development of red blood cells c. it helps one remember the proportions or white blood cells in blood d. trick questions, because it's not important

it helps one remember the proportions or white blood cells in blood

18. Which of the following are likely to increase in quantities when the body is under attack from bacteria? a. erythrocytes b. leukocytes c. platelets

leukocytes

12. Which of these undergoes mitosis to produce red blood cells, megakaryocytes, neutrophils, and eosinophils? A. lymphoid stem cell B. myeloid stem cells C. reticulocytes D. Hemoglobin molecules

lymphoid stem cell

Platelets are membrane-enclosed packet of chemicals that are needed for coagulation. Which of these cells breaks apart to form platelets? a. megakaryocytes b. erythrocyte c. hemocytoblasts d. lymphoid stem cells

megakaryocytes

4. Which of these is the most common type of white blood cell in a healthy human being a. eosinophil b. basophil c. lymphocyte d. neutrophil

neutrophil

3. The proportion of what type of cells are being measured in a hematocrit? a. platelets b. red blood cells c. white blood cells d. plasma e. the buffy coat

red blood cells

15. RBCs typically live about 120 days. What is the main reason for this short lifespan ? A. the high concentration of Hb eventually kills them. B. they are so flexible that they break C. they do not have a nucleus, so can't repair any damage to their cell membrane. D. their large surface area-to-volume ratio attracts too many antibodies

they do not have a nucleus, so can't repair any damage to their cell membrane.

17. What is the combination of plasma and formed elements called ? A. serum. B. lymph. C. whole blood. D. extracellular fluid.

whole blood.