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NEUROPHYSIOLOGY

Autonomie Nervous System: Schema

Intracranial wssels

Facial nenie (VII > haryngeal nerve !IX> ^ vtedulla oblongata •— Vagu$ nerve (X)-~

Lacrimal glands

Parotid glands

„—^ Subłmgual and iy submandibular glands

Peripheral cranial ' and facial ve$$ds laiynx Trathea Rronclii Lungs

zones of

Grcaler I Splanchnic

Lesser > ncrvc*s___

Leas; I

Lumbar olane hmei nerves J

Heart

Stornach

^Callbladder Bile ducls

Pancrcas

Supraicnal glands

Kidneys

Intestines

Deśr.ending colon Sigmoid colon

Rectum

Unnji v bładder

PcKric. Jj splanchnic

Prostatę txlernal genitalia

Figurę 2.15 Autonomic Nervous System: Schema .

The autonomie nervous system is composed of two divisions: Ihe parasympathetic division denved from four of ihe cranial nerves 1CN III, VII, IX, and X) and the S2-54 sacral spinał cord levels, and ihe sympathelir rihision associated with the thoracic and upper lumbar spinał cord level$ (TI-L2K The autonomic nefvous system is a two-neu* ron chain, with the preganglionic neuron arising from the central ner-vous system and synapsing on a f mstganglionic neuron located in a

peripheral autonomic ganglion. Poslgangliomc axons ol tlie autonomic nervous system innervate smooth musde, cardiac muscle, and glands. Basically, the sympathetic division mobili/es our body ("fight or flight") while Ute parasympathetic divtsion regulates digestive and homeostatic ftinctions. Normally. bóth divisions work in concert to regulate visceral activity (respiration, cardiovascular function, digestion. and associaled glandular actrvity).

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