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What is correct to say about the hormone action in humans?

1. Glucagon is secreted by β-cells of islets of Langerhans and stimulates glycogenolysis.
2. Secretion of thymosins is stimulated with ageing.
3. In females FSH first binds with specific receptors on ovarian cell membrane.
4. FSH stimulates the secretion of estrogen and progesterone.

Correct answer: Glucagon is secreted by β-cells of islets of Langerhans and stimulates glycogenolysis.

Solution

Glucagon is a hormone secreted by the pancreas that stimulates glycogenolysis and raises blood glucose levels.

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