Autonomic Nervous System - created from Mind Map

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Functions

Visceral Motor Division of the PNS

Visceral functions: Heart rate, blood pressure, digestion, urination

Neuron Organization

Two Neuron Chain

Preganglionic autonomic motor neuron

Increases communication and control

Neuronal Convergence

Neuronal Divergence

Preganglionic Axon

Ganglionic autonomic motor neuron

Postganglionic Axon

mooth muscle, cardiac muscle, or glands

Divisions

Parasympathetic

Sympathetic

Function

Structure

conserving energy and replenishing nutrient stores

Rest and Digest

Maintain homeostasis

Craniosacral division

Neurons

Ganglion

Cranial Outflow

Sacral Outflow

Occulomotor

Facial

Glossopharyngeal

Vagus

Pupil constriction

increase production of tears, nasal secretions, and saliva

Increased saliva production

Abdominal Cavity

Thoracic Cavity

Increased smooth muscle contraction and secretory activity in digestive tract organs

Increased mucous production, decrease diameter in airways, decrease heart rate, decrease force of heart contractions

Pelvic splanchnic nerves

Preganglionic Axons

Postganglionic Axons

Originate in the brainstem or lateral gray matter of the S2-S4 spinal cord segments

Have less than 4 branches

Long

Short

Terminal Ganglia

Intramural Ganglia

Autonomic Nervous System