Physio (AIMS NOV2007)

1.Sertoli cells in the testis have receptors for:
a. FSH
b. LH
c. Inhibin
d. ..

Ans—A (FSH)

2.Bicarbonate is maximally absorbed from:
a. PCT
b. DCT
c. Collecting duct
d. Thick ascending loop of Henle

Ans—A (PCT)

3.A 12 year old girl presents with Acute rheumatic carditis with mitral insufficiency. She is likely to have:
a. Increased peak expiratory flow
b. Increased total lung capacity
c. Increased residual volume
d. Decreased functional residual capacity

Ans—C Increased residual volume.

4.The mechanism of action of surfactant is:
a. Breaks the structure of water in the alveoli
b. Lubricates the flow of CO2 diffusion
c. Makes the capillary surface hydrophilic
d. ..

Ans—ABreaks the structure of water in the alveoli

5.The ‘c’-waves in JVP are due to:
a. Atrial contraction
b. Bulging of the tricuspid valve into the right atrium
c. Ventricular systole when the tricuspid valve is closed
d..

Ans--(B) Bulging of the tricuspid valve into the right atrium

6. Fast axonal transport is by all except:
a. Dynenin
b. Kinesin
c. Microfilaments
d. Neurofilaments

Ans[d] Neurofilaments

7)Ureteric peristalsis is due to:
a. Sympathetic innervation
b. Parasympathetic innervation
c. Both sympathetic and parasympathetic innervation
d. Pacemaker activity of the smooth muscle cells in the renal pelvis

Ans—D Pacemaker activity of the smooth muscle cells in the renal pelvis

8. Metabolic alkalosis is seen in:
a. Mineralocortoid excess
b. Increased excretion of base
c. Decreased secretion of H+ ion
d. Deficiency of mineralocorticoids

Ans—A Mineralocortoid excess

9.When a person changes position from standing to lying down position, following occurs:
a. Heart rate increases and settles at a higher level
b. Venous return to the heart rises immediately
c.Cerebral blood flow becomes more than that in standing position and settles at a higher level
d. Decrease in blood flow to the lung apex

Ans—B Venous return to the heart rises immediately

10.All of the following occur when the blood flows through systemic capillaries except:
a. Increase in hematocrit
b. Hb curve shifts to the left
c. Increased protein content
d. Decrease in Ph

Ans—BHb curve shifts to the left

11.Exercise causes:
a. Increased blood flow to the muscles after half minute of minute
b. Increase in cerebral blood flow due to increase in systolic blood pressure
c. Body temperature rise
d. decreased muscle lymph flow

Ans-(C) Body temperature rise

12.Which of the following is correctly matched:
a. B cells – Somatostain
b. D cells – Insulin
c. G cells – Gastrin
d. …..

Ans—(C) G cells – Gastrin