Physiology

Q: Juxtamedullary nephrons:

(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.
(e) :  None of the above
Answer:  Both descending and ascending limbs of loop of Henle contain thin segments.
Explanation:  

Q: Retinal isomerase catalyses the conversion of?

(a) :  11-cis retinal to rhodopsin
(b) :  All trans retinal to 11-cis retinal
(c) :  Lumirhodopsin to metarhodopsin
(d) :  Bathorhodopsin to lumirhodopsin
(e) :  None of the above
Answer:  All trans retinal to 11-cis retinal
Explanation:  

Q: Which of the following are vitamin K dependant clotting factors?

(a) :  II and IV
(b) :  IX and X
(c) :  III and V
(d) :  VI and VII
(e) :  None of the above
Answer:  IX and X
Explanation:  

Q: 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.
(e) :  None of the above
Answer:  It is a glycoprotein.
Explanation:  

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