In liver, glucagon stimulates glycogen breakdown via cAMP. Although you might expect glucagon to stimulate catabolism of the glu
cose formed as well, glucagon inhibits glycolysis and stimulates gluconeogenesis in liver. Which of the following is/are true? a. The function of glucagon is to decrease blood glucose concentration. All mentioned processes are consistent with this function. b. The function of glucagon is to decrease blood glucose pressure. All mentioned processes are consistent with this function. c. The function of glucagon is to increase blood glucose concentration. All mentioned processes are consistent with this function. d. The function of glucagon is to increase blood glucose pressure. All mentioned processes are consistent with this function.
c. The function of glucagon is to increase blood glucose concentration. All mentioned processes are consistent with this function.
Explanation:
Glucagon is the enzymes synthesized and released by alpha cells of endocrine pancreas in association with food. Glucagon causes an increase in blood glucose levels and it does so by :
1) Inhibiting the process of glycolysis so that the glucose is used less.
2) Stimulating the breakdown of glycogen to increase the glucose concentration in the blood.
3) Stimulating gluconeogenesis in the liver thus increasing the synthesis of glucose in liver.
All these processes directly increase the level (concentration) of glucose in blood.
Hence option C) The function of glucagon is to increase blood glucose concentration. All mentioned processes are consistent with this function is true
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Reduced blood volume leads to collapsing vessels, reduced pressure, and subsequently reduced perfusion pressure. The cardiovascular system combats low blood volume by constricting blood vessels until the body reaches a blood pressure that restores proper perfusion pressure.
