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WGU C107 ANATOMY AND PHYSIOLOGY I FINAL EXAM 2 2022/2023
01. Which of the following formed elements predominate in the blood circulation?
a. lymphocytes
b. thrombocytes
c. erythrocytes
d. monocytes
02. Which of these serves as circulating medium of the cardiovascular system?
a. lymph
b. CSF
c. synovial fluid
d. blood
03. which of the following refers to vasoconstriction?
a. decreased in the size in blood vessel lumen
b. increase in the size in the blood vessel lumen
c. delivering oxygen and nutrients to the body tissues
d. delivering wastes to the kidneys for excretion
04. which of the following serve as a reason why mature RBC's are anucleated?
a. due to homeostatic imbalance
b. nucleus is not necessary
c. to allow more hemoglobin content in the cytoplasm
d. there's no need for the genetic material in mature erythrocytes
05. which mechanisms do not contribute to the reduction of blood loss?
a. fibrinolysis
b. vascular spasm
c. platelet plug formation
d. blood clotting
,06. blood from the digestive organs and spleen flows through the ________ to the liver before
returning to the heart.
a. aorta
b. portal vein
c. vena cava
d. capillaries in the body tissues
07. why is the hepatic portal circulation important?
a. to allow the liver to store more nutrients
b. the liver regulates the levels of nutrients
c. the liver had to detoxify potential poisons
d. all of the above
08. which serves as site of exchange between fetal blood and maternal blood?
a. liver
b. intestine
c. umbilical cord
d. placenta
09. which of the following factors affects the viscosity of the blood?
a. the number of RBC’s
b. the level of oxygen
c. the amount of hemoglobin
d. the level of carbon dioxide
10. which statement is correct regarding blood loss?
a. blood loss is rapidly compensated by faster heart rate
b. it is compensated by less vasocontriction
, c. it is significant to maintain normal blood pressure
d. maintains elasticity of arteries
11. which of the following does not affect blood pressure?
a. resistance of vessel wall
b. cardiac output
c. aldosterone levels
d. glucose level in the blood
12. Which mechanism may decrease blood pressure?
a. Increased Na+ and water reabsorption
b. increased cardiac output
c. stimulation of cardio inhibitory center
d. vasoconstriction
13. which of the following statements does not explain the why red blood cell is highly specialized
for oxygen transport?
a. red blood cells have many mitochondria
b. red blood cells are biconcave in shape
c. red blood cells contain hemoglobin
d. hemoglobin has a greater binding capacity to carbon monoxide rather than oxygen
molecules.
14. which of the following blood vessels carry oxygen-rich blood?
a. pulmonary arteries
b. pulmonary veins
c. vena cava
d. coronary sinus
15. which of the following statements is true about pulse?
a. it results from the contraction of the ventricle
b. it results from the continuous flow of blood
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