The hormone that antagonises the function of insulin is
Correct answer: C. Glucagon
- A. Progesterone
- B. Parathormone
- C. Glucagon
- D. Tetraiodothyronine (T4)
Explanation
The correct answer is glucagon. Glucagon is produced by the pancreas and acts to increase blood glucose levels by promoting the conversion of glycogen to glucose in the liver, thereby antagonizing the action of insulin, which lowers blood glucose levels. Progesterone and parathormone are not involved in glucose regulation. T4 affects metabolism but does not directly counteract the effects of insulin.
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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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