The hormone insulin enhances the transport of glucose into body cells.Its secretion is controlled by a negative feedback system between the concentration of glucose in the blood and the cells that secrete insulin.Which of the following statements is most likely to be correct?
A)A decrease in blood glucose concentration will stimulate insulin secretion,which will in turn lower the blood glucose concentration still further.
B)An increase in blood glucose concentration will stimulate insulin secretion,which will in turn lower the blood glucose concentration.
C)A decrease in blood glucose concentration will stimulate insulin secretion,which will in turn increase the blood glucose concentration.
D)An increase in blood glucose concentration will stimulate insulin secretion,which will in turn increase the blood glucose concentration still further.

Question

Quizplus · Accepted Answer

Insulin secretion is controlled by negative feedback loop between the concentration of glucose in the blood and the cells that secrete insulin. An increase in blood glucose concentration stimulates the secretion of insulin which enhances the transport of glucose into body cells, thus lowering the blood glucose concentration. Conversely, a decrease in blood glucose concentration will reduce insulin secretion, allowing blood glucose concentration to increase. Therefore, option B is correct.

The Hormone Insulin Enhances the Transport of Glucose into Body