Neuroanatomy Draw It To Know It

6. Peripheral Nervous System—Autonomic Nervous System 95

DRAWING 6-1 Autonomic Fiber Arrangements

SYMPATHETIC

PARASYMPATHETIC

Thoracolumbar

inter-

mediolateral

cell column

Preganglionic

neuronAcetylcholine

Norepinephrine except

Acetylcholine for sweat glands

Epinephrine for adrenal medulla

Postganglionic

neuron

Target organs + sweat glands,

hair fibers, & blood vessels

of skeletal muscle & skin

Cranial nerves &

Sacral inter-

mediolateral

cell column

Preganglionic

neuron

Acetylcholine

Postganglionic neuron near to

or within the target organ

REST

ACTION

Acetylcholine