General Organization Definition

The Peripheral Neuropathy Solution

The Peripheral Neuropathy Solution

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The autonomic nervous system (ANS) is responsible for the motor innervation of smooth muscle, cardiac muscle, and glands of the body. The ANS is composed of two divisions: (1) sympathetic and (2) parasympathetic.

In both divisions there are two neurons in the peripheral distribution of the motor innervation (Figure III-1-6).

Preganglionic neuron with the cell body in the central nervous system (CNS). Postganglionic neuron with the cell body in a ganglion in the peripheral nervous system (PNS).

Clinical Correlate

To perform a lumbar puncture, a needle is passed through the interlaminar space in the midline while the vertebral column is flexed. The layers that the needle must pass through are:

• Superficial fascia

• Supraspinous ligament

■ Interspinous ligament

■ Interlaminar space

■ Epidural space

• Subarachnoid space

Central Nervous System (CNS)

Peripheral Nervous System (PNS) Ganglion

Preganglionic Nerve Fiber

Preganglionic Nerve Fiber

Postganglionic Nerve Fiber

Target

Figure II1-1 -6. Autonomic Nervous System

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