Question

Consider the following statements regarding the function of adrenal medullary hormones:
A. It causes pupillary constriction.
B. It is a hyperglycemic hormone.
C. It causes piloerection.
D. It increases the strength of heart contraction.

• A. B, C and D Only
• B. A, C and D Only
• C. D Only
• D. C and D Only

Hint:

Adrenal medulla = Fight or flight = Increased heart rate, glucose, piloerection.

Answer 1

The Correct Option is A

The adrenal medulla releases epinephrine and norepinephrine (adrenaline and noradrenaline). These hormones prepare the body for "fight or flight" responses. They increase heart rate and contraction strength (D), stimulate glucose release from the liver (hyperglycemic effect - B), and cause piloerection (hair standing on end - C). They cause pupillary dilation, not constriction (A).