Reference no: EM13464447

1. The ______drains the right arm and the right side of the heart and thorax.
a. jugular trunk
b. right lymphatic duct
c. thoracic lymphatic duct
d. lumbar lymphatic duct

2. Erythrocytes are antigen presenting cells:
a. true
b. false
c. not sure

3. The thymus is the only lymphoid organ that does not:
a. have lymphocytes
b. produce hormones
c. have a cortex and medulla
d. directly fight antigens

4. The tonsils located at the base of the tongue are the:
a. lingual tonsils
b. palatine tonsils
c. pharyngeal tonsils
d. peyers patch

5. Which of the following is not a method that maintains lymph flow?
a. skeletal muscle contraction
b. breathing
c. valves in lymph walls
d. smooth muscle contraction

6. The region of the spleen that rich in macrophages, reticular fibers and numerous RBC’sand functions to dispose of and recycle RBC’s is called:
a. white pulp
b. red pulp
c. cortex
d. medulla

7. Which of the following is not a method by which antibodies work?
a. neutralizing antigen
b. activating cytokines
c. enhancing phagocytes
d. agglutinating and precipitating antigen

8. Which of these choices below is the parent cell for all formed elements of blood?
a. megakaryocytic
b. NK cell
c. hemoblast
d. polymorphonuclear cell

9. Which blood type is called the universal donor?
a. A
b. B
c. AB
d. O

30. Which of the following might trigger erythropolisis?
a. Hypoxia of EPO- producing cells
b. Decreased tissue demand for oxygen
c. An increased number of RBC’s
d. Moving to a lower altitude

10. What organ in the body regulates erythrocyte production?
a. Kidney
b. Brain
c. Liver
d. Pancreas

11.What happens to the iron (Fe3+) that is released during the breakdown of damaged RBC’s?
a. It is used to synthesize proteins.
b. it is transported to the liver where it becomes part of bile
c. It is converted into urobiliogen and excreted in urine
d. it attaches to transferring and is transported to bone marrow for use in hemoglobin

13. What is the average normal ph of blood?
a. 8.35-8.45
b. 7.75-7.85
c. 7.35-7.45
d. 9.35-9.45

14. The special type of hemoglobin present in fetal red blood cells is _______.
a. Hemoglobin A
b. Hemoglobin B.
c. Hemoglobin F
d. Hemoglobin S

15. A lack of intrinsic factor, leading to a deficiency of vitamin B12 and large pale cells called macrocytes, is characteristic of _____.
a. Aplastic anemia
b. Polycythemia
c. Pernicious anemia
d. Sickle-cell anemia

16. Blood plasma is composed mostly of water and contains the protein ____ that acts as a carrier to shuttle certain molecules through the circulation, as well as acts as an important blood buffer
a. Fibrinogen
b. Gamma globulin
c. Heparin
d. Albumin

17. The percentage of erythrocytes in the total volume of a blood sample its called the _____.
a. Differential white blood cell count
b. Hematacrit
c. CBC
d. Prothrombin count

18. During red blood cell formation, the norm oblast ejects most of its organelles, the nucleus degenerates and is pinched off, allowing the cell to collapse inward forming a biconcave shaped cell called a _____.
a. Reticulocyte
b. Late erythrocyte
c. proerythrocyte
d. erythrocyte

19. An abnormal excess of erythrocytes that increases blood viscosity, causing it to sludge, or flow sluggishly is called ______.
a. Thalassemia
b. Sickle cell anemia
c. Polycythemia
d. Hemorrhagic anemia

20. The phase of hemostasis that is triggered by direct injury in vascular smooth muscle causing constriction of the blood vessel is known as ____.
a. Platelet plug formation
b. Vascular spasm
c. Coagulation
d. Clot retraction