MOVESCI 230 Study Guide - Midterm Guide: External Iliac Artery, Thoracic Wall, Red Pulp
Document Summary
Lecture 10: ans, hypothalamus, and brain stem. Ans consists of: autonomic motor neurons. Innervates: smooth and cardiac muscles, many glands: visceral sensory neurons in organs and blood vessels. Integrating centers in the cns. Autonomic neurons live in the spinal cord and peripheral ganglion. Parasympathetic (cn iii, vii, ix, and x; s2, 3, 4) *we are always under some degree of sympathetic control: sympathetics > parasympathetics. The sympathetic nervous system is for fight or flight: releases stress hormones (cortisol) Increase blood flow to skeletal muscle. Increase blood glucose and pressure: dilate pupils, relax intestinal muscles. The parasympathetic nervous system is for rest and digest: opposite of sympathetic. Somatic nervous system is a one neuron system: neurons project from ventral horn and release nt to target. *all somatic, pre and postganglionic parasympathetics, and preganglionic sympathetics use. *with the exception of sweat glands, postganglionic sympathetics release ne as their nt. Cn iii = oculomotor nerve. Cn vii = facial nerve.
