L21: Parasympathetic Nerves (3,5,7,9,10) Flashcards
(31 cards)
list the 4 main parasympathetic CNs
- oculomotor n
- facial n
- glossopharyngeal n
- vagus n
CN III
oculomotor n
carries 2 modalities - GSM and GVM
carries parasym fibers that control the shape of the lens and pupil
CN III - GSM
oculomotor n
cell bodies in oculomotor nuclear complex thru sup orbital fissure to extrinsic eye muscles levator palpebrae sup
CN III - GVM
pregang
- -Edinger Westphal nucleus
- -thru sup orbital fissure
- -to ciliary ganglion
postgang
–to constrictor pupillae and ciliary muscles
CN V
trigeminal n
named for its 3 branches that are considered their own nerves
major sensory n to face GSS
motor innervation to mastication SVM
largest of the 12 CNs
CN V1
ophthalmic branch
general sensory to orbit
sensations to nose, skin above eye, upper eyelid
branches:
frontal, lacrimal, nasociliary
CN V2
maxillary branch
sensation to maxillary region branches: infraorbital ant sup alveolar zygomatic palatine nasal post sup alveolar
CN V3
mandibular branch
sensation to mandible branches: motor branches to 4 muscles of mastication auriculotemporal inf alveolar lingual buccal
auriculotemporal branch
of CN V3
sensory to scalp behind jaws
CN V - GSS modality
cell bodies of sensory neurons are located in trigeminal or semilunar ganglion
CN V - SVM modality
cell bodies of these motor neurons are located in masticator nucleus
CN VII
facial n
SVM
GSS and SVS
GVM
motor branches:
temporal, zygomatic, buccal, mandibular, cervical
CN VII - SVM
muscles of facial expression from 2nd pharyngeal arch
cell bodies of these neurons in motor nucleus
exit via stylomastoid foramen
CN VII - GSS
facial n
cell bodies of these sensory neurons in geniculate ganglion
supply part of external ear
CN VII - SVS
cell bodies of these sensory neurons are located:
- -primary neurons in geniculate ganglion
- -2ndary neurons in solitary nucleus
- -tertiary ones end in thalamus
carry taste sensation from ant 2/3s of tongue, hard and soft palates
CN VII - GVM
facial n carries this modality as part of parasym sys
preganglionic neurons in sup salivatory nucleus and lacrimal nucleus
postgang neurons in submandibular and pterygopalatine ganglia
supply:
lacrimal gland, submandibular gland, sublingual gland, mucous gland of oral/nasal cavities
the lingual nerve branch of CN ___ carries part of the SVS and preganglionic GVM fibers of CN ____
5
7
preganglionic fibers to the pterygopalatine ganglion make up the ?
greater petrosal nerve
pass thru the pterygoid canal as the nerve to the pterygoid canal
postganglionic fibers from the pterygopalatine ganglion use the ?
zygomatic and lacrimal branch of CN V to reach the lacrimal gland
peculiar branches of the facial nerve
they split off from inside the petrous part of temporal bone
before the nerve leaves the stylomastoid foramen
carry the parasym part of the facial n
CN IX
glossopharyngeal n SVM GVM GVS GSS SVS
CN IX - SVM
cell bodies of this motor neurons in nucleus ambiguous
supply stylopharyngeal muscle
CM IX - GVM
cell bodies of pregang neurons in inferior salivatory nucleus
post gang in otic ganglion
supply parotid gland
CN IX - GVS
cell bodies
sensory neurons in
inf ganglion
sensation from carotid body and carotid sinus
