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Ch 14, 15

Terms in this set (57)

Autonomic plexuses are collections of: sympathetic postganglionic axons, parasympathetic preganglionic axons and some visceral sensory axons. They do not synapse with each another.

-The cardiac plexus consists of sympathetic postganglionic axons from the cervical and thoracic trunk as well as parasympathetic preganglionic axons from the vagus nerve.
Increased sympathetic activity increases heart rate and blood pressure
while increased parasympathetic decreases heart rate.

-The pulmonary plexus consists of sympathetic postganglionic axons from the cervical and thoracic trunk and parasympathetic preganglionic axons from the vagus nerve. They project to the bronchi of the lungs. Increased sympathetic activity causes bronchodilation while increased parasympathetic activity causes bronchoconstriction.

-The pulmonary plexus consists of sympathetic postganglionic axons from the cervical and thoracic trunk and parasympathetic preganglionic axons from the vagus nerve. They project to the bronchi of the lungs. Increased sympathetic activity causes bronchodilation while increased parasympathetic activity causes bronchoconstriction.

-The abdominal aortic plexus consists of the celiac, superior mesenteric, and inferior mesenteric plexuses, sympathetic postganglionic axons from prevertebral ganglia and parasympathetic preganglionic axons from vagus or pelvic splanchnic nerves. It innervates all abdominal and some pelvic organs.

-The hypogastric aortic plexus consists of sympathetic postganglionic axons from the aortic plexus and sympathetic trunk, parasympathetic preganglionic axons from pelvic splanchnic nerves. It innervates viscera within pelvic region.