Which of the following represents the action of insulin?
Correct answer: B. Decreases blood glucose levels by forming glycogen
- A. Increases blood glucose level by stimulating glucagon production
- B. Decreases blood glucose levels by forming glycogen
- C. Increases blood glucose levels by promoting cellular uptake of glucose
- D. Increases blood glucose levels by hydrolysis of glycogen
Explanation
Insulin is a peptide hormone, secreted by the b cells of the islets of Langerhans in the pancreas, that promotes the uptake of glucose by body cells, particularly in the liver (hepatocytes) and muscles (adipocytes), and thereby controls its concentration in the blood.
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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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