The Living WorldHard

Question

Which one of the following is an example of negative feedback loop in humans ?

Options

A.Constration of skin blood vassels and constration of skeletal muscles when it is too cold
B.Secretion of tears after falling of sand particles into the eyeSalivation of mouth at the sight of delicious food
C.Salivation of mouth at the sight of delicious food
D.Secretion of sweet glands and constriction of skin blood vessels when it is too hot

Solution

Skin blood vessels constrict and skeletal nuscles contracts due to cold is an example of negative feedback mechanism of homeostasis.

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