Cardiovascular Physiology by David Mohrman & Lois Jane Heller

Author:David Mohrman & Lois Jane Heller
Language: eng
Format: epub, mobi
Publisher: McGraw-Hill Education
Published: 2010-03-21T16:00:00+00:00

OTHER NEURAL INFLUENCES

Blood vessels, as a general rule, do not receive innervation from the parasympathetic division of the autonomic nervous system. However, parasympathetic vasodilator nerves, which release acetylcholine, are present in the vessels of the brain and the heart, but their influence on arteriolar tone in these organs appears to be inconsequential. Parasympathetic vasodilator nerves are also present in the vessels of the salivary glands, pancreas, gastric mucosa, and external genitalia. In the latter, they are responsible for the vasodilation of inflow vessels responsible for erection.

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