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Solution


Q.

Consider the following statements regarding function of adrenal medullary hormones :                [2025]

(A) It causes pupilary constriction.

(B) It is a hyperglycemic hormone.

(C) It causes piloerection.

(D) It increases strength of heart contraction.

Choose the correct answer from the options given below :
1 C and D only  
2 B, C and D only  
3 A, C and D only  
4 D only  

Ans.

(2)

Adrenal medulla secretes two hormones called adrenaline or epinephrine and noradrenaline or norepinephrine (also called emergency hormones).

Both the hormones -

•  Cause pupillary dilation (not constriction)

•  Stimulate breakdown of glycogen resulting in increased concentration of glucose in blood i.e., cause hyperglycemia.

•  Cause piloerection (raising of hair).

•  Increase strength of heart contraction i.e., heartbeat.