Human Physiology Exam Revision Questions
with Verified A+ Solutions
1. Which of the following is NOT primarily a function of blood plasma?
A. transport of hormones
B. being in osmotic balance with red blood cells
C. having plasma proteins that exert an osmotic pressure favoring fluid absorption into the capillaries
D. providing clotting factors that are ready to be activated
E. transport of oxygen - Answer e
2. Which of the following does NOT describe erythrocytes?
A. contain myoglobin
B. have a high surface-to-volume ratio
C. carry oxygen and carbon dioxide in blood
D. are red in color
E. when mature, have no nucleus - Answer a
3. What is the term that describes the production of red blood cells?
A. hemaglutination
B. erythrocytosis
C. erythropoiesis
D. erythroblastosis
E. hemostasis - Answer c
4. Which is TRUE about the condition anema?
A. It can be caused by too little iron in the diet.
B. It can be caused by kidney failure.
C. It can be caused by abnormal hemoglobin.
D. It results in reduced oxygen-carrying capacity of the blood.
,E. All of the above are true. - Answer e
5. A female patient has a blood test. One ml of her blood is drawn, spun in a centrifuge, and the plasma
volume is measured and found to be 0.6 ml. Two months later the same patient returns to the doctor
and, after doing another blood test, the doctor tells the patient that she has become anemic compared
to her previous visit. Which of the following is most likely to be the woman's hematocrit on the second
visit?
A. 35%
B. 50%
C. 70%
D. 100%
E. 0.6 ml - Answer a
6. A male patient complains of physical weakness and fatigue. A blood test shows his hematocrit to be
30%. Which of the following diagnoses is the least likely to explain his symptoms?
A. internal bleeding
B. dietary iron deficiency
C. dietary vitamin B12 deficiency
D. lung disease
E. kidney disease - Answer d
7. Where is most of the iron in a person's body located?
A. in the bone marrow
B. in the liver
C. in the cytochromes
D. in erythrocytes
E. in the kidneys - Answer d
8. Deficiency of which of the following results in the condition, pernicious anemia?
A. iron
, B. vitamin B12
C. erythropoietin
D. vitamin D
E. bilirubin - Answer b
9. Consider the equation F = P/R.
It describes the flow (F) of fluid in a tube in which there is a pressure difference (P) between the two
ends and a resistance (R) to flow. Based on this equation, which is a correct conclustion?
A. The flow of fluid in a tube depends upon the absolute pressure at the beginning of the tube.
B. The rate of fluid flow in a tube will increase if the pressure at the beginning is increased while the
pressure at the end of the tube stays the same.
C. The greater the resistance to flow in a tube, the greater the rate of flow for any given pressure
difference.
D. If both the resistance and the pressure gradient in a tube increase, the flow must also increase.
E. The rate of flow in a tube will decrease if the resistance to flow is decreased. - Answer b
10. Which of the following changes would most increase the resistance to blood flow in a blood vessel?
A. halving the diameter of the vessel
B. doubling the diameter of the vessel
C. halving the length of the vessel
D. doubling the length of the vessel
E. decreasing the hematocrit from 50% to 40% - Answer a
11.
Action potentials in the heart spread from cell to cell through:
A. desmosomes.
B. gap junctions.
C. interneurons.
D. valves.
with Verified A+ Solutions
1. Which of the following is NOT primarily a function of blood plasma?
A. transport of hormones
B. being in osmotic balance with red blood cells
C. having plasma proteins that exert an osmotic pressure favoring fluid absorption into the capillaries
D. providing clotting factors that are ready to be activated
E. transport of oxygen - Answer e
2. Which of the following does NOT describe erythrocytes?
A. contain myoglobin
B. have a high surface-to-volume ratio
C. carry oxygen and carbon dioxide in blood
D. are red in color
E. when mature, have no nucleus - Answer a
3. What is the term that describes the production of red blood cells?
A. hemaglutination
B. erythrocytosis
C. erythropoiesis
D. erythroblastosis
E. hemostasis - Answer c
4. Which is TRUE about the condition anema?
A. It can be caused by too little iron in the diet.
B. It can be caused by kidney failure.
C. It can be caused by abnormal hemoglobin.
D. It results in reduced oxygen-carrying capacity of the blood.
,E. All of the above are true. - Answer e
5. A female patient has a blood test. One ml of her blood is drawn, spun in a centrifuge, and the plasma
volume is measured and found to be 0.6 ml. Two months later the same patient returns to the doctor
and, after doing another blood test, the doctor tells the patient that she has become anemic compared
to her previous visit. Which of the following is most likely to be the woman's hematocrit on the second
visit?
A. 35%
B. 50%
C. 70%
D. 100%
E. 0.6 ml - Answer a
6. A male patient complains of physical weakness and fatigue. A blood test shows his hematocrit to be
30%. Which of the following diagnoses is the least likely to explain his symptoms?
A. internal bleeding
B. dietary iron deficiency
C. dietary vitamin B12 deficiency
D. lung disease
E. kidney disease - Answer d
7. Where is most of the iron in a person's body located?
A. in the bone marrow
B. in the liver
C. in the cytochromes
D. in erythrocytes
E. in the kidneys - Answer d
8. Deficiency of which of the following results in the condition, pernicious anemia?
A. iron
, B. vitamin B12
C. erythropoietin
D. vitamin D
E. bilirubin - Answer b
9. Consider the equation F = P/R.
It describes the flow (F) of fluid in a tube in which there is a pressure difference (P) between the two
ends and a resistance (R) to flow. Based on this equation, which is a correct conclustion?
A. The flow of fluid in a tube depends upon the absolute pressure at the beginning of the tube.
B. The rate of fluid flow in a tube will increase if the pressure at the beginning is increased while the
pressure at the end of the tube stays the same.
C. The greater the resistance to flow in a tube, the greater the rate of flow for any given pressure
difference.
D. If both the resistance and the pressure gradient in a tube increase, the flow must also increase.
E. The rate of flow in a tube will decrease if the resistance to flow is decreased. - Answer b
10. Which of the following changes would most increase the resistance to blood flow in a blood vessel?
A. halving the diameter of the vessel
B. doubling the diameter of the vessel
C. halving the length of the vessel
D. doubling the length of the vessel
E. decreasing the hematocrit from 50% to 40% - Answer a
11.
Action potentials in the heart spread from cell to cell through:
A. desmosomes.
B. gap junctions.
C. interneurons.
D. valves.
