Autonomic Nervous System (Visceral)

Question 1

What are the two autonomic fiber types?

Answer 1

GVA - Afferent (sensory)

GVE - Efferent (motor)

Question 2

What are the muscle types that GVE innervates?

Answer 2

Cardiac
Smooth mm (lungs, bv, thorax)

Question 3

Autonomic NS Breakdown

Answer 3

GVA –> Dorsal Root - pseudo-unipolar
(sensory input)

GVE –> Pre-Ganglionic (V. Rt) Post Ganglionic
(sympathetic - parasympathetic)
*gse is a one neuron system

Question 4

Name the Gangla used by GVE –> THINK (VENTRAL ROOT GANGLIA)

Answer 4

Lateral (Paravertibral) - Sympathetic Chain
Collateral (Prevertebral) - Sympathetic
Terminal - Parasympathetic

Thoraco-Lumbar Spinal Cord

Question 5

(talking GVE) Sympathetic pre - Ganglionic neurons reside where? Origin?

Answer 5

In the Grey matter of spinal cord between levels T1 - L2; Thoraco-Lumbar Spinal Cord

Question 6

(talking GVE) Sympathetic pre - Ganglionic neurons reside where? Origin?

Answer 6

Cranio-Sacral

Brainstem or Sacral Spinal Cord S2-S4).

Question 7

What nerve has all pre-ganglionic parasympathetic neurons? Where do they synapse with post ganglionic neuron?

Answer 7

Vagus Nerve (cranial nerve 10)

Terminal Ganglion (nears walls of thoracic viscera)

Question 8

What contributes to the autonomic plexii

Answer 8

Vagus nerve & sympathetic truck

Question 9

Where can you find post- ganglionic neurons of the sympathetic/parasympathetic NS?

Answer 9

S: Branches of the Sympathetic chain
P: Innervation of the plexii probably

Question 10

Splanchnic Nerves are (G, L , L) ? That do they innervate

Answer 10

are Sympathetic Pre-ganglionic - Do not innervate thoracic viscera; go to the abdomen (no plexus innervation) (T5- L1 - Origin) –

Question 11

Parasympathetic, Sympathetic innervation of the heart is..

Answer 11

P: Vagus
S: Off sympathetic Chain

Question 12

Summary

Answer 12

Review pg. 31