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XuZhou Medical College
Examination of Medical Physiology for
10
TH
IMSPQ 2012
ITEM
SCORE
（
Feb29,2012
）
Ⅰ
Ⅱ
TOTAL
SCORE
PART
Ⅰ
. Single
choices ( 2 point×
30=60 points, Please
choose the BEST answer and then fill in the answer
card)
1. The major
physiological function of plasm colloid osmotic
pressure is to
A. regulate
water exchange between the two sides of
capillaries.
B. regulate fluid
equilibrium between the two sides of cells.
C.
maintain the normal cellular shape.
D. keep the normal cubic capacity of
cells.
E.
determine the total plasm osmotic pressure.
2. During the process of excitation-
contraction coupling in skeletal muscle, calcium
is released from the sarcoplasmic reticulum by
A. Inositol triphosphate
(IP
3
)
B. Protein
kinase A
C. An increase in
intracellular calcium concentration
D.
Membrane depolarization
E. An increase
in intracellular sodium concentration
3. In a nerve, the magnitude of the
action potential overshoot is normally a function
of the
A. Magnitude of the stimulus
B. Intracellular potassium
concentration
C. Extracellular sodium
concentration
D. Resting
membrane potential
E. Diameter of the
axon
4. The rate of diffusion of a
particle across a membrane will increase if
A. The area of the membrane decreases
B. The
thickness of the membrane increases
C.
The size of the particle increases
D. The concentration gradient of the
particle decreases
E. The lipid
solubility of the particle increases
5.
The following diagram illustrates the relative
resistance of three vessels. The ratio of the flow
in vessel X to the flow in vessel Y is
A. 1:1
B.
3:2
C. 2:1
D. 3:1
E. 4:3
6. The data below was obtained from a
patient before and after administration of a drug
that increased his mean right atrial pressure.
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The ratio of the patients total
peripheral resistance before administration of the
drug to the total peripheral resistance after
administration of the drug is
A. 1:1
B.
3:2
C. 4:3
D. 5:4
E. 6:5
7. During ventricular
ejection, the pressure difference smallest in
magnitude is between the
A. Pulmonary
artery and left atrium
B. Right ventricle and
right atrium
C.
Left ventricle and aorta
D. Left ventricle and left atrium
E. Aorta and
capillaries
8. Net filtration from
capillaries will increase following
A.
Increased contraction of the precapillary
sphincter
B.
Decreased arterial pressure
C.
Increased plasma protein concentration
D. Decreased
capillary permeability
E. Increased
postcapillary resistance
9. A
deficiency of pulmonary surfactant would
A. Decrease surface tension in the
alveoli
B. Decrease the
change in intrapleural pressure required to
achieve a given tidal volume
C.
Decrease lung compliance
D. Decrease the work of breathing
E. Increase
functional residual capacity (FRC)
10.
Airway resistance is lowest
A. During a
forced expiration
B. At the total lung
capacity
C. At the residual volume
D. During vagal stimulation
E. When
breathing gas with low oxygen
11. The
principal paracrine secretion involved in the
inhibitory feedback regulation of gastric acid
secretion is
A. Gastrin
B. Somatostatin
C. Histamine
D. 5-HT
E.
Acetylcholine
12. Acidification of the
duodenum will
A. Decrease pancreatic
secretion of bicarbonate
B. Increase secretion of
gastric acid
C. Decrease gastric emptying
D. Increase contraction of
the gallbladder
E. Increase
contraction of the sphincter of Oddi
is produced in the body
A. only when
body core temperature falls below the temperature
set point.
B. at a constant
rate.
C. at a
variable rate.
D. during
hypothermia, mainly by nonshivering thermogenesis.
primary function of the bones of the
middle ear is to
A. Amplify the sound
stimulus
B. Filter high-frequency sounds from
the sound stimulus
C. Enable the
direction of a sound stimulus to be detected
D. Enhance the
ability to distinguish different sound frequencies
E. Protect the ear from damage
15. Which one of the optic field
defects listed in the following diagram is
produced by a pituitary gland tumor?
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