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Nerves of the ANS

Types of motor nerves found in the ANS

Lateral Horn has pre-glanglionic cell bodies only from T1 - L2.
Ventral Horn has pre-ganglionic axons to spinal nerves from T1 - L2. Also has somatic motor axons.
Spinal Nerve All carry somatic motor axons, somatic sensory fibers and post-ganglionic sympathetic axons T1 - L2 also have visceral sensory fibers and pregangliotic motor axons.
White ramus communicans Heavily myelinated; connects spinal nerves T1 - L2 (anatomically to the ventral rami) to the sympathetic trunk ganglia. Carries PRE-ganglionic motor axons and visceral sensory fibers.
Gray Ramus Communicans Unmyelinated; connects spinal nerves T1 - L2 to (anatomically to the ventral rami) to the sympathetic trunk ganglia. Carries POST-ganglionic motor axons to the spinal nerve.
Sympathetic (Paravertebral) Trunk Ganglion Contains post-gangliotic cell bodies.
Sphlancnic Nerve Connects sympathetic trunk ganglia with prevertebral ganglia. Carries pre-ganglionic motor axons and visceral sensory fibers.
Prevertebral Ganglion COntains post-ganglionic cell bodies whose axons are distributed to abdominopelvic viscera by coursing in the adventitia of the arteries supplying those viscera.
Created by: jflynn28



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