Pharmacology for Anaesthesia and Intensive Care

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Section IIICardiovascular drugs

PNS

Circular muscles of iris

Radial muscle of iris

Salivary glands

Blood vessels

Gut and Kidney

Descending colon, Bladder,

Genitals

Heart, Lungs, Blood vessels

Lacrimal glands

Salivary glands

Heart

Lungs

Gut

Kidney

Ureter

Bladder

Descending colon

Genitals

III

VII

IX

X (vagus)

S 2,3,4

Brainstem

Cervical

Thoracic

Lumbar

Sacral

Coeliac ganglion

Sup' Inf' Mesenteric ganglion

SNS

Figure 12.1.Simplified diagram of the autonomic nervous system.

DRG

APR

Spinal cord

PVG

SC

WRC GRC

Figure 12.2.Various connections of the sympathetic nervous system. DRG, dorsal root

ganglion; APR, anterior primary rami; WRC, white rami communicans; GRC, grey rami

communicans; PVG, prevertebral ganglion; SC, sympathetic chain.