Question

which of the following hormones is secreted by the ovaries?
a estrogen
b melatonin
c glucagon
d insulin

Explanation:

• Estrogen: Produced by the ovaries, plays a key role in female reproductive system development and function.
• Melatonin: Secreted by the pineal gland, regulates sleep - wake cycles.
• Glucagon: Made by the pancreas, raises blood glucose levels.
• Insulin: Also from the pancreas, lowers blood glucose levels.

Answer:

A. estrogen