Alpha cells of Islets of Langerhans secrete hormone called:
Correct answer: C. Glucagon
- A. Glucocorticoid
- B. Insulin
- C. Glucagon
- D. Aldosterone
Explanation
The correct answer is Glucagon. It is a peptide hormone secreted by the alpha cells of the Islets of Langerhans in the pancreas. Glucagon's primary function is to increase blood sugar levels by promoting the breakdown of glycogen to glucose in the liver. This process helps maintain blood glucose homeostasis, especially during fasting states. On the other hand, Glucocorticoids and Aldosterone are hormones produced by the adrenal cortex, unrelated to the Islets of Langerhans. Insulin is secreted by the beta cells of the Islets of Langerhans and works oppositely to glucagon by lowering blood sugar levels.
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About Chemical Coordination and Hormones
Chemical coordination uses hormones released by endocrine glands and carried in blood to specific target cells. Coverage includes the pituitary, thyroid, pancreas, adrenal glands, ovaries and testes, feedback control, and the contrast between slower, longer-lasting hormonal responses and rapid nervous coordination.
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