which would be a homeostatic mechanism of the temperature of the testes was too high? 1....

which would be a homeostatic mechanism of the temperature of the testes was too high?

1. contraction of cremaster muscle

2. vasodilation of testicular artery

3. relaxation of cremaster muscle

4. peristalsis of ductus deferens

5. contraction of dartos muscle

Solutions

Expert Solution

CORRECT ANSWER IS OPTION 3 - RELACATION OF CREMASTER MUSCLE

Normally the temperature of the testis regulated at 35 degree celsius , that is 2 degree celsius less than the body temperature. The temperature of the testis is kept below the normal body temperature because the spermatogenesis is affected by the temperature.

The optimim tempeature for the spermatogenesis is 35 degree celsius.

This temperature regulation is by different mechanism

one is by cremastric Reflex.

When the temperature of the testis become high, it is regulated by the relaxation of the cremasteric muscle present in the spermatic cord.when the cremasteric muscle relaxes, the testis will descend downward away from the body

When the temperature of the testis become low, it is regulated by the rcontraction of the cremasteric muscle present in the spermatic cord.when the cremasteric muscle contract, the testis will move upward closer to the body

2) Dartos muscle

when the temperature is raised , the dartos muscle will relax and increases the surface area for the heat loss

when the temperature is low, dartos muscle will contract and reduces the heat loss by reducinng the Surface area.

Sydney Mullin answered 1 year ago

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