1. 1. The most abundant type of cell in the human body is which of the follow-
ing?
A. Neuron
B. Epithelial cell
C. Red blood cell
D. White blood cell
E. Vascular smooth muscle cell
Skeletalmuscle: Answer: C
2. 1. The most abundant substance in the human body and the approximate
percentage ofthat substance in the body is which of the following?
A. Protein, 30%
B. Protein, 60%
C. Water, 30%
D. Water, 60%
E. Carbohydrate, 30%
F. Carbohydrate,: Answer: D
3. 1. A large volume of blood is transfused to a person whose baroreceptor blood
pressure control system is not functioning and arterial blood pressure rises from
the normal level of 100 to 160 mm Hg. If the same volume of blood is infused into
the same person when the baroreceptor system is functioning and this time the
arterial pressure increases from the normal level from 100 mm
Hg up to 120 mm Hg, calculate the gain of the baroreceptor system in this person.
A. -3
B. -2
C. -1
D. 0: Answer: B
4. 1. Which of the following substances has the highest extracellular fluid to
intracellular fluid concentration ratio for most mammalian cells?
,Introduction to Physiology: The Cell and General Physiology
A. Sodium ions
B. Potassium ions
, Introduction to Physiology: The Cell and General Physiology
C. Carbon dioxide
D. Glucose
E. Protein: Answer: A
5. 1. Exchange of substances between the cardiovascular system and the inter- stitial
fluid occurs mainly in which of the following?
A. Arteries
B. Arterioles
C. Capillaries
D. Venules Veins:
Answer: C
6. 1. Which of the following is the approximate distance from the capillaries to
most cellsof the body?
A. Less than 50 angstroms
B. Less than 50 microns
C. Less than 50 millimeters
D. Less than 100 angstroms
E. Less than 100 microns
Lessthan100: Answer: A
7. 1. When a person is at rest, how much time is required for the blood in the
circulation to traverse the entire circulatory circuit?
A. 1 second
B. 1 minute
C. 3 minutes
D. 4 minutes
E. 5: Answer: B
8. 1. feedback is often referred to as a "vicious cycle" because it
leads to instability and sometimes death.
A. Postitive, progressive
B. Positive, diminished