Which of the following is not secreted by thyroid gland?
Correct answer: D. Glucagon
- A. Thyroxin
- B. Triiodothyronine
- C. Calcitonin
- D. Glucagon
Explanation
The correct answer is Glucagon. Glucagon is secreted by the pancreas, not the thyroid gland. Its primary function is to increase blood glucose levels, which is crucial for maintaining energy balance in the body. On the other hand, Thyroxin (T4), Triiodothyronine (T3), and Calcitonin are all hormones secreted by the thyroid gland. Thyroxin and Triiodothyronine are involved in regulating metabolism, while Calcitonin helps control calcium levels in the blood.
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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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