Respuesta :
The sympathetic and parasympathetic nervous systems are both used to innervate pulmonary circulation. The production of catecholamines, such as dopamine, norepinephrine, epinephrine, and neuropeptide Y, as a result of increased sympathetic activity typically results in vasoconstriction and an increase in pulmonary vascular resistance. Compared to adrenergic nerve fibers, pulmonary arteries have fewer cholinergic nerve fibers. Acetylcholine and vasoactive intestinal polypeptide are released in response to parasympathetic stimulation, and they play a role in vascular dilatation and a reduction in pulmonary vascular resistance. Nonadrenergic, noncholinergic neurons that can be either excitatory (e-NANC) or inhibitory are also present in the lung (i-NANC). While the e-NANC neurons mediate vasoconstriction, the release of substance P, nitric oxide, calcitonin gene-related peptide, and vasoactive intestinal peptide by the i-NANC nerves mediates vasodilation.
To know more about pulmonary circulation from the given link:
brainly.com/question/12836593
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