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craniosacral outflow

Parasympathetic nervous system (craniosacral outflow)

QuestionAnswer
Most Preganglionic fibers orginiate where? in brain nuclei (esp. brain stem)
Where do preganglionic fibers exit thru? cranial nerves III, VII, IX, X and a small amount via XI
Other preganglionic fibers orginate and exit where? in lateral gray horns of sacral spinal segmments 2-4 and exit anterior root of spinal nerve
All ________ outflow ends in the terminal ganglia in or near effector organ Parasympathetic preganglionic
sacral outflow forms pelvic (pelvic splanchnic) nerves
pelvic splanchnic nerves synapse in hypogastric ganglion
Post ganglionic fibers to effector organs in Colon, ureters, bladder, reproductive organs
Cranial Nerve III (OCulomotor)- preganglionic fibers to ciliary ganglion
Cranial Nerve III post ganglionic fibers to ciliary muscle and pupillary sphincter
Cranial Nerve VII (facial) some preganglionic fibers to sphenopalatine (pterygopalatine) ganglion, postganglionic fibers to lacrimal gland or nasal musoca
Cranial Nerve VII (facial) other preganglionic fibers to submandibular ganglion (submaxillary ganglion) then postganglionic fibers to submaxillary and sublingual salivary glands
Cranial Nerve IX (glossopharyngeal) preganglionic fibers to otic ganglion then postganglionic fibers to parotid salivary gland
Cranial Nerve XI (accessory)has a small amount of outflow that joins vagal outflow
Cranial Nerve X (vagus) most important outflow 80% of total
Parasympathetic Outflow - goes to many structures in the thorax, abdomen ( usually preganglionic fibers ((parasympathetic)) synapse w/ few postgang fibers, most or all going to same organ. ) little widespread stimulation.
Created by: k.mckinley1991
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