Stimulation by the Autonomic Nervous System Results in Increased Insulin

question 84

Multiple Choice

Stimulation by the autonomic nervous system results in increased insulin secretion from the pancreas during and after a meal. Which of the following are most likely to be true?

• A) Increased insulin secretion is due to parasympathetic stimulation.
• B) Acetylcholine agonists will stimulate insulin secretion.
• C) Increased insulin secretion is due to sympathetic stimulation.
• D) Increased insulin secretion is due to adrenergic agonists.
• E) Both "Increased insulin secretion is due to parasympathetic stimulation" and "Acetylcholine agonists will stimulate insulin secretion" are correct.

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Definitions:

Thyroid Hormones

Hormones, including thyroxin (T4) and triiodothyronine (T3), secreted by the thyroid gland; stimulate rate of metabolism.

Surface Receptors

Proteins located on the cell membrane that bind to specific molecules in the cell's external environment, initiating a cellular response.

Second Messengers

Intracellular signaling molecules released by a cell in response to exposure to extracellular signaling molecules, amplifying the signal within the target cell.

Paracrine Regulation

Paracrine regulation involves the signaling of cells to nearby cells by releasing chemical messengers, influencing the behavior of those nearby cells without needing to enter the bloodstream.