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 secretes epinephrine and norepinephrine, commonly known as adrenaline and noradrenaline. These hormones initiate the body's "fight or flight" response by: accelerating heart rate and increasing contraction strength (D), triggering glucose release from the liver (a hyperglycemic effect - B), and inducing piloerection (hair erection - C). They induce pupillary dilation, not constriction (A).