physiology MCQs – Page 6

Practise focused physiology questions with marked answers for exam preparation and subject revision.

physiology Mcqs
101. Gastrin is produced by _____________?
comments icon0

A. Gastric antral cells

B. All

C. Pituitary

D. Pancreas

102. A decrease in the arterial PO2 is seen in______________?
comments icon0

A. Paralysis of inspiratory muscles

B. Decrease in hemoglobin concentration of arterial blood

C. Sluggish blood flow

D. High altitudes
103. Which of the following hormones is released from the posterior pituitary ?
comments icon0
A. Antidiuretic hormone

B. ACTH

C. Luetinizing hormone

D. Growth hormone

104. Maximum absorption of bile occurs at_____________?
comments icon0

A. Colon

B. Jejunum

C. Duodenum

D. Ileum
105. In jaundice, there is an unconjugated hyperbilirubinemia which is most likely due to __________?
comments icon0

A. Cirrhosis

B. Hepatitis

C. Increased break down of red cells

D. Obstruction of bile canaliculi

106. Which amongst the following is the gold standard for demonstrating hcG____________?
comments icon0

A. Immunofluorescence

B. Radio immune assay

C. Latex agglutination

D. ELISA

107. Energy expenditure during normal breathing____________?
comments icon0

A. 50% -75% of total energy spent

B. 2% 3% of total energy spent

C. 25% 50% of total energy spent

D. 15% 20% of total energy spent

108. Vagal stimulation following intake of food does not affect secretion of_______________?
comments icon0
A. Parotid

B. Pancrease

C. Gall bladder

D. Stomach

109. Hypothyroidism should be treated with daily administration of which of the following thyroid hormone preparations ?
comments icon0
A. Thyroxine (T4)

B. Thyroglobulin

C. Triiodothyronine (T3)

D. Thyroid extract

110. Which of the following results due to excessive parathormone secretion_______________?
comments icon0
A. Increased serum calcium

B. Increased excretion of phosphates

C. Increase excretion of calcium

D. Decrease excretion of calcium

111. Peristalsis involves coordinated contraction and relaxation______________?
comments icon0

A. None of the above

B. Dorsal and ventral to food bolus

C. Lateral and medial to food bolus

D. Above and below the food bolus
112. Pancreas produce_____________?
comments icon0

A. All of the above

B. Pepsinogen

C. Chymotrypsinogen

D. Hydrochloric acid

113. Aldosterone______________?
comments icon0

A. Increases reabsorption of sodium

B. Increases exceretion of potassium

C. Increases retention of sodium

D. Both A and B

114. Oxygen dissociation cure is shifted to the right in all except_____________?
comments icon0

A. Increase of 2, 3 3 DPG

B. Fall in pH

C. HbF

D. Rise in temperature

115. Cyanosis or bluish coloration of skin and mucus membrane depends upon______________?
comments icon0

A. The relative proportion of reduced and oxygenated hemoglobin

B. Thickness of the skin

C. The absolute amount of reduced hemoglobin

D. Fragility of capillaries

116. Histamine stimulate the secretion of_______________?
comments icon0
A. HCL by stomach

B. Pancreatic enzymes

C. Amylase by salivary gland

D. Gastrin by stomach

117. Aldosterone secretion is increased when there is a fall in____________?
comments icon0

A. Plasma K+

B. Plasma Na+

C. pH of the plasma

D. Angiotensin II level

118. The best stimulator of respiratory center is____________?
comments icon0
A. Increase in arterial carbon dioxide level

B. Decrease in arterial carbon dioxide level

C. Increase in arterial oxygen level

D. None of the above

119. The final sugars in intestinal chyme are____________?
comments icon0

A. Ribose & xylulos

B. Glucose & fructose

C. Ribose & mannose

D. Xylulose & fructose

120. Insulin increases the activity of___________?
comments icon0
A. HMG. CoA reductase

B. HMG- CoA synthase

C. HMG- CoA lyase

D. Thiolase