Moderate

Which of the following occurs in the body in response to the secretion of Glucagon

Correct answer: D. Production of cyclic AMP in target cells

  • A. Conversion of glucose to glycogen in liver cells
  • B. Decrease in blood glucose concentration
  • C. Increased uptake of glucose by muscle cells
  • D. Production of cyclic AMP in target cells

Explanation

Option D is correct. 'Glucagon' has the opposite role to 'insulin', i.e., it mobilizes blood glucose in the plasma when you're hypoglycemic. When glucagon is released, it can perform the following tasks: Stimulating the liver to break down glycogen to be released into the blood as glucose. Activating gluconeogenesis is the conversion of amino acids into glucose. Break down stored fat (triglycerides) into fatty acids for use as fuel by cells. All of the other options, except D, explain the role of insulin and not glucagon. By simply using an elimination method, we can deduce that D is the right answer. Just a piece of additional information: The chief role of cyclic AMP in several tissues seems to be to facilitate or promote the mobilization of glucose and fatty acid reserves. In the liver, glucagon and catecholamines cause an increase in the intracellular level of cyclic AMP by stimulating adenylyl cyclase.

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Coordination depends on receptors, neurons, synapses and nerve impulses, with reflex actions traced through the reflex arc and the roles of major brain regions. Chemical coordination covers endocrine glands and hormones, including how hormones regulate growth, metabolism, reproduction and internal balance, unlike rapid nervous control.

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