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.Management Sciences
Category: Physiology Mcqs
Site of RBC formation in 20 years old healthy male is____________?
A. Flat bones
B. Long bones
C. Liver
D. Yolk sac
Removal of parathyroid gland produces the following changes EXCEPT_________________?
A. Decline plasma calcium level
B. Decrease in plasma phosphate level
C. Neuromuscular hyperexcitability
D. hypo calcemic tetany
During the initial part of inspiration, which of the following does not occur ?
A. Intrapulmonary pressure falls
B. Intra thoracic pressure rises
C. Intra-abdominal pressure rises
D. The partial pressure of O2 in dead space rises
What effect does hyperventilation have on the oxygen binding affinity of hemoglobin ?
A. P50 and oxygen affinity decrease
B. P 50 and oxygen affinity increase
C. P 50 decreases and the oxygen affinity increases
D. P50 increase and the oxygen affinity decreases
The velocity of conduction in the Purkinjie fibers of the heart is__________________?
A. 1 to 4 m/sec
B. 5 to 8 m/sec
C. 9 to 12 m/sec
D. More than 12 m/sec
Fastest conducting tissue in human heart _________________?
A. AV node
B. SA node
C. Bundle of His
D. Purkinje fibers
The primary site of action of antidiuretic hormone is on the_______________?
A. Distal tubules and collecting ducts in the kidney
B. Afferent arterioles of the glomeruli
C. Thirst center in the hypothalamus
D. Osmoreceptors in the hypothalamus
Functional unit of kidney is______________?
A. Nephron
B. Glomerulus
C. Collecting ducts
D. Loop of Henle
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