Q.

Pars intermedia secretes

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a

PTH 

b

ADH  

c

MSH 

d

TSH 

answer is C.

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Detailed Solution

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Pars intermedia is a portion of the adenohypophysis which is almost merged with pars distalis in humans. It secretes a hormone called melanocyte stimulating hormone (MSH). MSH increases skin pigmentation in amphibians by stimulating the dispersion of melanin granules in melanocytes. Its exact role in humans is unknown. However, continued administration of MSH for several days causes darkening of the skin.

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