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22 Cards in this Set

  • Front
  • Back
General Autonomic Function
regulation of internal environment, maintain normal body functions. Vegetative, Visceral nervous system
Autonomic Innervations
Glands, smooth muscle, cardiac muscle
Tissue types innervated by ANS
Digestive, blood vessels, heart, sweat/salivary glands, respiratory airways (smooth muscl.), eye pupils, adrenal glands.
ANS divisions
Parasympathetic; Craniosaccral
Sympathetic; thoracolumbar T1-L2,3
Sympathetic ANS
Responds w/ full capacity and mobilization of all resources in an emergency; flight or fight;
Parasympathetic ANS
Rest and Repose; decreased heart rate, increased digestion (dont need to save your big mac anymore)
Autonomic Efferents
A 2-ganglion chain of preganglionic in CNS, and postganglionic outside of CNS.
Sympathetic Nervous System neuron chain
-Long preganglionic cell in spinal cord, T1-L2.
-Short postganglionic cell outside of CNS
Two types of sympathetic postganglionic chains
1. located in paravertebral ganglia (sympathetic trunk)
2. located in prevertebral ganglia
sympathetic trunk
the collection of paravertebral ganglia which form a chain of paired ganglia on either side of the vertebral column. long preganglionic sympathetic cells from the spinal nerves T1-L2 synapse here, and then proceed to one of 3 options
Prevertebral ganglia
ganglia located anterior to the vertebral column. 3 pairs exist: superior/inferior mesenteric, and celiac.
1st option for the sympathetic nervous system pathway
Short Preganglionic neuron can:
1. Synapse w/ postganglionic neuron at the same segment from which the gray/white communicants emerged from
2nd option for sympathetic nervous system pathway
Preganglionic neuron can:
Emerge from segment from which the collaterals emerged, then pass up/down the sympathetic trunk and synapse with postganglionic neuron at another segment
3rd option for sympathetic nervous system pathway
pass right through paravertebral ganglion and synapse at one of the three prevertebral ganglia.
Parasympathetic preganglionic fiber locations
In cranium, brain regions that give rise to C.N. 3, 7, 9, and 10. In saccrum, S2-S4.
Parasympathetic cranial postganglia locations
Ciliary Ganglion
Pterygopalatine ganglion
Submandibular Ganglion
Otic Ganglion
Ciliary Ganglion
where C.N. III (oculomotor nerve)'s parasympathetic preganglionic fibers synapse with postganglionic fibers. they then innervate the ciliary fibers and muscles of the eye, causing visual control.
Pterygopalatine Ganglion
Cranial ganglion where parasympathetic preganglionic cells synapse with postganglionic fibers of C.N. VII (Facial Nerve) for lacrimal gland tear production and nasal/oral cavity glandular production.
Submandibular ganglion
Preganglionic parasympathetic fibers of C.N. VII (Facial Nerve) synapse with postganglionic fibers which prompt saliva production from submandibular and sublingual salivary glands.
Otic Ganglion
Where preganglionic parasympathetic fibers from C.N. IX (glossopharyngeal nerve) synapse with postganglionic fibers which innervate and prompt saliva production from the parotid salivary gland.
terminal ganglia
where preganglionic parasympathetic fibers from C.N. X (Vagus) and pelvic nerves S2-S4 synapse with postganglionic short fibers which innervate organs within close proximity.
Parasympathetic nerve pathway
Long Preganglionic
Short Postganglionic
Postganglionic fibers are generally within close proximity of the organs/glands/muscles they innervate.