Module 3 Flashcards
Outflow of SNS are duplicated by ?
The visceral afferent nerves which
carry impulses denoting visceral function/dysfunction
What are the characteristics of the pre and post- ganglionic synapses of the parasympathetic response?
Synapse of preganglionic fibers tend to occur near the organ
Postganglionic fibers are very short
Cranial outflow is provided through what Cranial nerves?
CN 3 (III) ,7(VII),9 (IX),10(X)
What is CN III? and what is it responsible for?
CN 3: Occulomotor → constrictors of pupil
What is CN VII? and what is it responsible for?
Facial
What are the branches of CN VII?
Facial
Temporal branch
Zygomatic branch
Buccal branch
Marginal mandibular branch
Cervical branch
How is the Cranial outflow managed by CN VII
CN 7: Facial →
Sinuses (secretion)
Submandibular and sublingual glands (secretion)
Nose & palate (secretion)
Eustachian tube (stapedius muscle)
How is CN IX related to Cranial Outflow?
Glossopharyngeal
Parotid glands (secretion), carotid sinus (mechanoreceptor: pressure) & body
(chemoreceptor: monitors O2 and blood pH levels: H+ & CO2
How is CN X related to Cranial Outflow
Vagus → Heart, lungs, kidneys, carotid sinus & body (aortic body), GI tract
Sacral outflow Originates in ? and results in what?
Cell bodies of S2-3-4 and results in
A group of nerves called the pelvic splanchnic nerves
What are the pelvic splanchnic nerves?
Provide the preganglionic parasympathetic nerve fibers to supply the hindgut and pelvic viscera.
Synapses occur in sympathetic ganglia which are either?
Paraspinal or collateral
In the thoracic area, paraspinal ganglion lay where?
In the fascia directly over each rib head
Preganglionic fibers may pass through the _____ and are connected to a _____ found in abdomen and then synapse
Lateral chain ganglia
Collateral Sympathetic ganglion
Paraspinal Chain Ganglia extend from ??
the head to the Coccyx
What are the characteristics of the thoracic and upper lumbar paraspinal chain ganglia?
Lateral to bodies of T1-T12; resting in fascial layer directly anterior to corresponding rib heads & their fascia
The Thoracic & Upper Lumbar paraspinal chain ganglia are located
In fascial layer directly anterior to corresponding rib heads & their fascia
The Cervical Paraspinal Chain Ganglia usually have how many ganglia?
ganglia – superior, middle and inferior
What is the Stellate ganglion?
A collection of sympathetic nerves found anterior to the neck of the first rib. Inferior often fuses with T1 ganglion = stellate ganglion
Cervical/Lumbar/Sacral ganglia do NOT have ______ but do have gray for postganglionic fibers to re-enter spinal nerve
White rami
Gray Rami