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.Management Sciences
Category: Physiology Mcqs
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
Kussmamul’s respiration occurs in response to_______________?
A. Decrease in pH of blood
B. Increase in pH of blood
C. Obstructive pulmonary disease
D. Carbon monoxide poisoning
In cases of hypercapnia there is_______________?
A. Increased pH of blood
B. Decreased pH of blood
C. Remains same
D. Increased oxygen concentration in blood
The first physiological response to high environmental temperature is_______________?
A. Sweating
B. Vasodilatation
C. Decrease heat production
D. Non- shivering thermogenesis
Histamine is present on surface of_______________?
A. Lymphocytes
B. Mast cells
C. Neutrophils
D. Erythrocytes
The tissue macrophages are derived from the________________?
A. Neutrophil
B. Eosinophil
C. Monocyte
D. All of the above
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