physiology MCQs – Page 9

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

physiology Mcqs
161. Excess of cortisol causes______________?
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A. Acromegaly

B. Cushing s syndrome

C. Diabetes insipidus

D. Conns syndrome

162. Hormones, which stimulate spermatogenesis, are______________?
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A. A.D.H. and Oxytocin

B. Testosterone and F.S. H

C. Thyroxine and parathormone

D. Insulin and glucagon

163. Glucagon is secreted by ____________?
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A. Beta cells of pancreas

B. Alpha cells of pancreas

C. None of the above

D. Gamma cells of pancreas

164. The duodenum secretes a hormone which has following effects except_______________?
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A. Causes copious pancreatic juice rich in bicarbonate and poor in enzymes

B. Leads to meager flow of pancreatic juice rich in enzymes

C. Causes gall bladder to contract and sphincter of oddi to relax

D. Increases gastric motility
165. Pharyngeal phase of deglutition_____________?
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A. Vocal cords are closed

B. A and B

C. Is a reflex mechanism

D. Is a voluntary mechanism

166. Smoking causes_____________?
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A. Ciliary motility

B. Mucous secretion

C. Cellular hyperplasia

D. All of the above
167. The blood glucose level in diabetes mellitus is decreased by removal of the______________?
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A. Anterior pituitary

B. Parathyroids

C. Thyroid

D. Posterior pituitary

168. Fats absorbed with the help of bile salts are_______________?
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A. Higher fattery acids, diglycerides and monoglycereides

B. Free fatty acid

C. All of the above

D. Glycerol

169. Maximum secretory glands in stomach are________________?
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A. Gastric glands

B. Pyloric glands

C. Fundic glands

D. Brunners glands

170. Aldosterone production is controlled by _____________?
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A. Hypothalamus

B. Posterior pituitary gland

C. Adrenal gland

D. Anterior pituitary gland
171. All the following hormones bind to cell surface receptors of the target tissues EXCEPT_____________?
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A. Epinephrine

B. Thyroid stimulating hormone

C. Glucagon

D. Estrogen
172. Enzymes, which play an important role in calcification are______________?
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A. Alkaline phosphatase and catalase

B. Enolase and Calcitonin

C. Alkaline phosphatase and pyrophophatase

D. Pyrophosphatase and carbonic anhydrase

173. Which of the following body secretions is maximum______________?
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A. Gastric

B. Salivary

C. Lacrimal

D. Sweat

174. Arterial O2 content is reduced in one of following ______________?
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A. Anemic hypoxia

B. Hypoxic or arterial hypoxia

C. Stagnant hypoxia

D. Histotoxic hypoxia

175. Peristalsis in the gut is due to ______________?
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A. Simultaneous action of circular and longitudinal muscles

B. Mecharical distension

C. Extrinsic nervous influence

D. Preperistalitic intestinal secretion

176. Not true about T3 and T4 is______________?
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A. T3 more potent than T4

B. Absorption of T4 is more than T3

C. T4 binds to prealbumin

D. Concentration of T4 is more than T3

177. Urine urobilinogen is absent in_______________?
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A. All of the above

B. Viral hepatitis

C. Hemolytic jaundice

D. Obstructive jaundice
178. Deficiency of cortisol causes_______________?
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A. Graves disease

B. Addison disease

C. Acromegaly

D. Cushing syndrome

179. Which hormone , together with the catecholamines enhances the tone of vascular smooth muscle and assists in elevating blood pressure ?
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A. Parathyroid hormone

B. Cortisol

C. Glucagon

D. Thyroxine

180. What is true about pneumothorax ?
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A. The concentration of surfactant is reduced in alveoli

B. Increased lung compliance

C. Total chest wall diameter is increased

D. Interpleural pressure becomes more negative