Physiology MCQs Archive
Retinal isomerase catalyses the conversion of?
A. 11-cis retinal to rhodopsin
B. All trans retinal to 11-cis retinal
C. Lumirhodopsin to metarhodopsin.
C. Bathorhodopsin to lumirhodopsin.
Which is a true statement regarding inhibin?
A. Increases the secretion of GnRH.
B. Molecular weight is between 5000 and 10,000.
C. It is secreted by hypothalamus.
D. It is a glycoprotein.
Regarding contractile filaments, which is true?
A. Each successive pair of cross bridges of myosin filaments is axially displaced from the previous pair by 140 degrees.
B. The backbone of
Regarding organ of Corti, all are true except?
A. Reticular lamina is supported by rods of Corti.
B. Tectorial membrane is made of glycoprotein.
C. Hensen’s cells lie inside the outer
A. Have smaller sized glomeruli
B. Possess short loops of Henle
C. Have slow rate of filtration
D. Both descending and ascending limbs of loop of Henle contain thin segments.
Regarding somatomedin, which is true?
A. Reduced glucose oxidation in fat
B. Increases chondrogenesis
C. Activity is increased in protein deficiency
D. Activity is increased by glucocorticoids
Action of calcitonin is?
A. Increases bone resorption
B. Increases calcium and phosphate absorption from GIT
C. Increases renal formation of 1-25 DHCC
D. Increases renal excretion of calcium and phosphate
Primary hyperaldosteronism is characterised by?
A. Peripheral oedema
B. Rise in plasma potassium
C. Metabolic acidosis
D. Decrease in sodium content of sweat
The function of axonemal dynein is?
A. Moves particles to the 'minus' end of microtubule.
B. Binds to actin and produce motion by bending their neck region.
C. Responsible for the