PNS Final Exam
Visceral afferent cell bodies are located in ___________________________ or relevant cranial
nerve ganglion - correct answer Posterior root ganglia
Central processes enter the cord through ___________ - correct answer Posterior root
Peripheral processes carry impulses from viscera to _______ ________ via autonomic ganglia,l
plexus, or even somatic nerves without _________ - correct answer Cell bodies; synapse
Sympathetic afferents may travel through ________________ and to ______________ by
passing through white ramus communicans - correct answer Sympathetic trunk; spinal ganglia
Visceral afferent is associated with receptors sensitive to what ? - correct answer Blood
pressure, chemical concentrations, muscle stretching
Preganglionic parasympathetic fibers are carried in which nerves? - correct answer CN 3,7,9,10
and S2-S4
Preganglionic parasympathetic fibers are ______________ because they release ____ - correct
answer Cholinergic; Ach
Preganglionic parasympathetic fibers generally synapse on post-ganglionic neurons in
_________ ganglia - correct answer Peripheral
Post-ganglionic fibers extend to effector organs to cause what physiologic effects? - correct
answer Decrease CO, constrict bronchioles, constrict pupils, stimulate peristalsis
CN 3, 7, 9 will generally supply structures in _____ - correct answer Head
CN X will generally supply what? - correct answer Cardiac, respiratory, digestive structures in
neck, thorax and abdomen
S2, 3, 4 will generally supply distal parts of which systems? - correct answer Digestive and
urogenital
Oculomotor nerve (CN III) has Preganglionic cell bodies located where? - correct answer
Accessory oculomotor nucleus
Where is the accessory oculomotor nucleus located? - correct answer Periaqueductal gray
matter
CN III Preganglionic parasympathetic fibers enter the orbit and synapse in ____________
ganglion - correct answer Ciliary
Post-ganglionic axons carried in _______________________________ enter the eyeball to
supply 2 muscles - correct answer Short ciliary nerves
Which 2 muscles are supplies by parasympathetic fibers CN III? - correct answer Ciliary muscle
Sphincter pupillae
,PNS Final Exam
When the ciliary muscle contracts, the lens becomes more __________ to focus on ________
objects - correct answer Convex; closer
Preganglionic cell bodies of CN VII are located where? - correct answer Superior salivary
nucleus
How do Preganglionic cell bodies of CN VII exit the CNS? - correct answer Intermediate nerve
The intermediate nerve then splits into what 2 branches? - correct answer Greater petrosal
nerve
Chorda tympani
Greater petrosal nerve leaves the facial nerve at the ___________________________ - correct
answer Geniculate ganglion
After the geniculate ganglion, the greater petrosal nerve carries ________________
parasympathetic fibers anterior through the hiatus for the greater petrosal nerve - correct
answer Pre-ganglionic
Greater petrosal nerve re-enters the petrous part of the temporal bone thought the _____
____________ - correct answer Foramen lacerum
Once the greater petrosal nerve re-enters, it travels in the _____________ canal - correct
answer Pterygoid canal
Greater petrosal nerve ultimately synapses in the ______________ ganglion - correct answer
Pterygopalatine ganglion
The chorda tympani carries ___________ parasympathetic fibers through the tympanic cavity
and leaves the temporal bone via the _______ - correct answer Pre-ganglionic ;
pterygotympanic fissure
After leaving the temporal bone, chorda tympani combines with which nerve? - correct answer
Lingual nerve
Lingual nerve is a branch of? - correct answer V3
Preganglionic parasympathetic fibers of CN VII then leave the lingual nerve to reach the
______________ - correct answer Submandibular ganglion
Postganglionic parasympathetic fibers of CN VII travel to which glands? - correct answer
Submandibular and sublingual
Preganglionic cell bodies of CN IX are located where? - correct answer Inferior salivary nucleus
Preganglionic fibers of CN IX are carried in the ________ nerve - correct answer Tympanic
, PNS Final Exam
In the tympanic cavity, tympanic nerve receives postganglionic parasympathetic fibers from
where? - correct answer Superior cervical ganglion
Tympanic plexus is formed from? - correct answer Tympanic nerve + postganglionic
parasympathetic fibers from superior cervical ganglion
The Preganglionic parasympathetic fibers of CN IX pass through tympanic plexus and reform as
the? - correct answer Lesser petrosal nerve
Lesser petrosal nerve travels though lesser petrosal canal to the ? - correct answer Otic
ganglion
Postganglionic parasympathetic fibers from otic ganglion are carried to which glands? - correct
answer Parotid and posterior lingual
Fibers reach the parotid gland via the _______ nerve - correct answer Auriculotemporal (V3)
Fibers reach the posterior lingual glands via ________________ branches of CN IX - correct
answer Lingual
Other visceral afferents are carried in the __________ branch of CN IX. - correct answer
Carotid
Baroreceptors are in the carotid ________ - correct answer Sinus
Chemoreceptors are in the carotid _______ - correct answer Body
Preganglionic cells of CN X are located where? - correct answer Dorsal nucleus of the vagus
Fibers of vagus nerve supply __________ muscles of bronchial tree, GI tracts, gall bladder and
bile ducts, myocardium, pancreas, liver, spleen. - correct answer Smooth
Postganglionic cells of CN X are usually located where? - correct answer In the organs supplied
or blood vessels that supple the target organs
Preganglionic fibers of CN X reach the heart via _____________ and _______________ -
correct answer Superior and inferior cardiac nerves
Superior and inferior cardiac nerves synapse in the _____________ at the base of the heart and
wall of the heart - correct answer Cardiac plexus
Postganglionic fibers of CN X are carried to what 3 places in the heart? - correct answer SA
node, AV node, AV bundle to purkinje fibers
Parasympathetic impulses from CN X to the heart will ___________ the myocardium and
_________ the coronary artery - correct answer Inhibit; constrict
Preganglionic fibers of CN X reach the lungs via ___________________ - correct answer
Anterior and posterior bronchial branches
Visceral afferent cell bodies are located in ___________________________ or relevant cranial
nerve ganglion - correct answer Posterior root ganglia
Central processes enter the cord through ___________ - correct answer Posterior root
Peripheral processes carry impulses from viscera to _______ ________ via autonomic ganglia,l
plexus, or even somatic nerves without _________ - correct answer Cell bodies; synapse
Sympathetic afferents may travel through ________________ and to ______________ by
passing through white ramus communicans - correct answer Sympathetic trunk; spinal ganglia
Visceral afferent is associated with receptors sensitive to what ? - correct answer Blood
pressure, chemical concentrations, muscle stretching
Preganglionic parasympathetic fibers are carried in which nerves? - correct answer CN 3,7,9,10
and S2-S4
Preganglionic parasympathetic fibers are ______________ because they release ____ - correct
answer Cholinergic; Ach
Preganglionic parasympathetic fibers generally synapse on post-ganglionic neurons in
_________ ganglia - correct answer Peripheral
Post-ganglionic fibers extend to effector organs to cause what physiologic effects? - correct
answer Decrease CO, constrict bronchioles, constrict pupils, stimulate peristalsis
CN 3, 7, 9 will generally supply structures in _____ - correct answer Head
CN X will generally supply what? - correct answer Cardiac, respiratory, digestive structures in
neck, thorax and abdomen
S2, 3, 4 will generally supply distal parts of which systems? - correct answer Digestive and
urogenital
Oculomotor nerve (CN III) has Preganglionic cell bodies located where? - correct answer
Accessory oculomotor nucleus
Where is the accessory oculomotor nucleus located? - correct answer Periaqueductal gray
matter
CN III Preganglionic parasympathetic fibers enter the orbit and synapse in ____________
ganglion - correct answer Ciliary
Post-ganglionic axons carried in _______________________________ enter the eyeball to
supply 2 muscles - correct answer Short ciliary nerves
Which 2 muscles are supplies by parasympathetic fibers CN III? - correct answer Ciliary muscle
Sphincter pupillae
,PNS Final Exam
When the ciliary muscle contracts, the lens becomes more __________ to focus on ________
objects - correct answer Convex; closer
Preganglionic cell bodies of CN VII are located where? - correct answer Superior salivary
nucleus
How do Preganglionic cell bodies of CN VII exit the CNS? - correct answer Intermediate nerve
The intermediate nerve then splits into what 2 branches? - correct answer Greater petrosal
nerve
Chorda tympani
Greater petrosal nerve leaves the facial nerve at the ___________________________ - correct
answer Geniculate ganglion
After the geniculate ganglion, the greater petrosal nerve carries ________________
parasympathetic fibers anterior through the hiatus for the greater petrosal nerve - correct
answer Pre-ganglionic
Greater petrosal nerve re-enters the petrous part of the temporal bone thought the _____
____________ - correct answer Foramen lacerum
Once the greater petrosal nerve re-enters, it travels in the _____________ canal - correct
answer Pterygoid canal
Greater petrosal nerve ultimately synapses in the ______________ ganglion - correct answer
Pterygopalatine ganglion
The chorda tympani carries ___________ parasympathetic fibers through the tympanic cavity
and leaves the temporal bone via the _______ - correct answer Pre-ganglionic ;
pterygotympanic fissure
After leaving the temporal bone, chorda tympani combines with which nerve? - correct answer
Lingual nerve
Lingual nerve is a branch of? - correct answer V3
Preganglionic parasympathetic fibers of CN VII then leave the lingual nerve to reach the
______________ - correct answer Submandibular ganglion
Postganglionic parasympathetic fibers of CN VII travel to which glands? - correct answer
Submandibular and sublingual
Preganglionic cell bodies of CN IX are located where? - correct answer Inferior salivary nucleus
Preganglionic fibers of CN IX are carried in the ________ nerve - correct answer Tympanic
, PNS Final Exam
In the tympanic cavity, tympanic nerve receives postganglionic parasympathetic fibers from
where? - correct answer Superior cervical ganglion
Tympanic plexus is formed from? - correct answer Tympanic nerve + postganglionic
parasympathetic fibers from superior cervical ganglion
The Preganglionic parasympathetic fibers of CN IX pass through tympanic plexus and reform as
the? - correct answer Lesser petrosal nerve
Lesser petrosal nerve travels though lesser petrosal canal to the ? - correct answer Otic
ganglion
Postganglionic parasympathetic fibers from otic ganglion are carried to which glands? - correct
answer Parotid and posterior lingual
Fibers reach the parotid gland via the _______ nerve - correct answer Auriculotemporal (V3)
Fibers reach the posterior lingual glands via ________________ branches of CN IX - correct
answer Lingual
Other visceral afferents are carried in the __________ branch of CN IX. - correct answer
Carotid
Baroreceptors are in the carotid ________ - correct answer Sinus
Chemoreceptors are in the carotid _______ - correct answer Body
Preganglionic cells of CN X are located where? - correct answer Dorsal nucleus of the vagus
Fibers of vagus nerve supply __________ muscles of bronchial tree, GI tracts, gall bladder and
bile ducts, myocardium, pancreas, liver, spleen. - correct answer Smooth
Postganglionic cells of CN X are usually located where? - correct answer In the organs supplied
or blood vessels that supple the target organs
Preganglionic fibers of CN X reach the heart via _____________ and _______________ -
correct answer Superior and inferior cardiac nerves
Superior and inferior cardiac nerves synapse in the _____________ at the base of the heart and
wall of the heart - correct answer Cardiac plexus
Postganglionic fibers of CN X are carried to what 3 places in the heart? - correct answer SA
node, AV node, AV bundle to purkinje fibers
Parasympathetic impulses from CN X to the heart will ___________ the myocardium and
_________ the coronary artery - correct answer Inhibit; constrict
Preganglionic fibers of CN X reach the lungs via ___________________ - correct answer
Anterior and posterior bronchial branches
