A: The scrotum acts as a temperature regulato | vedclass

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(A) The scrotum maintains the temperature of the testes $2-2.5^{\circ}C$ lower than the normal internal body temperature,which is necessary for sperma

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Assertion and Reason both are correct and Reason is the correct explanation of Assertion.

Vedclass · Answer

(A) The scrotum maintains the temperature of the testes $2-2.5^{\circ}C$ lower than the normal internal body temperature,which is necessary for spermatogenesis.This temperature regulation is achieved by the contraction and relaxation of the dartos and cremaster muscles.The dartos muscle is present in the wall of the scrotum,and its contraction causes the scrotal skin to wrinkle,thereby reducing the surface area to conserve heat.The cremaster muscle helps in pulling the testes closer to or further from the body cavity to regulate temperature.Since both the assertion and the reason are scientifically accurate and the reason explains the mechanism behind the temperature regulation mentioned in the assertion,the correct option is $A$.

$A$: The scrotum acts as a temperature regulator for the testes.
$R$: The wall of the scrotum is supported by dartos muscles,which help in the positioning of the testes.

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$A$: The scrotum acts as a temperature regulator for the testes.$R$: The wall of the scrotum is supported by dartos muscles,which help in the positioning of the testes.