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【单选题】
Which of the following could potentially result in more low V/Q regions within the lung?（ ）
A.
Obstruction of both pulmonary arteries
B.
None of the above
C.
Doubling the ventilation to the right cranial lobe while its blood flow remains the same
D.
Vasoconstriction of the pulmonary arteries of the left lung in a cow
E.
Atelectasis of one lobe of a dog lung
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【单选题】Under normal conditions, renal blood flow remains relative stable by（ ）
A.
Humoral regulation
B.
Feedback regulation
C.
Reflex
D.
Self-regulation
E.
Neuromodulation
【单选题】The factors affecting both excitability and conductivity of myocardium are（ ）
A.
0 depolarization rate
B.
Duration of phase 2
C.
Resting potential level
D.
0 depolarization amplitude
E.
Rate of repolarization in phase 1
【单选题】One of the things that you can store ATP in your body is（ ）
A.
Amino acids
B.
ATP
C.
ADP
D.
Glucose
E.
Creatine phosphate
【单选题】The eye that parallel light rays focus on behind the retina when viewing distant objects is called（ ）
A.
Cross-eye
B.
Astigmatism
C.
Presbyopia
D.
Emmetropia
E.
Myopia
【单选题】Factors that increase glomerular filtration rate are（ ）
A.
Decreased glomerular capillary blood pressure
B.
Elevated arterial blood pressure throughout the body
C.
decreased osmotic pressure of plasma crystal
D.
Decreased plasma colloid osmotic pressure
E.
Increased hydrostatic pressure in renal vesicle
【单选题】When nerve cells are excited, neurotransmitters are released from（ ）
A.
Axon
B.
Initial segment of axon
C.
Axon terminal
D.
Dendritic
E.
Cell body
【单选题】The maintenance of body homeostasis mainly depends on（ ）
A.
Conditioned reflex
B.
Feedforward regulation
C.
Negative feedback regulation
D.
Positive feedback adjustment
E.
Short feedback regulation
【单选题】An increase in the pH of blood will:（ ）
A.
Decrease the oxygen content of the blood
B.
Decrease the oxygen capacity of the blood
C.
Shift the oxyhemoglobin dissociation curve to the right
D.
Decrease P50
E.
Decrease the affinity of hemoglobin for oxygen
【单选题】In the following choices, the unique form of movement of the stomach is（ ）
A.
Group creep
B.
Receptive relaxation
C.
Peristalsis
D.
Pocket movement
E.
Segmented movement
【单选题】Which is not a protein in the following clotting factors（ ）
A.
Factors V and VII
B.
Factors I and II
C.
Factor VI
D.
Factor IV
E.
Factor X