cranial nerve stuff

Question 1

SSA

Answer 1

special senses of vision, hearing, balance

Optic II
Vestibulochochlear IV

Question 2

GSA

Answer 2

general sensation from skin and mucous membranes (perception of touch, pain, temp)

Trigeminal V
Facial VII
Glossopharyngeal IX
Vagus X

Question 3

GVA

Answer 3

visceral sensation from parotid, submandibular & sublingual salivary glands, carotid body & sinus, middle ear, pharynx, larynx, trachea, bronchi, lungs, heart, esophagus, stomach and intestines up to left colic flexure

Facial VII
Glossopharyngeal IX
Vagus X

Question 4

SVA

Answer 4

taste & smell; olfactory stimuli arouse emotions and induce visceral responses

Olfactory I
Facial VII
Glossopharyngeal IX
Vagus X

Question 5

GSE

Answer 5

supplies muscles derived from the myotome regions of the embryonic somites (ie muscles of orbit & tongue)

Oculomotor III
Trochlear IV
Abducent VI
Hypoglossal XII

Question 6

SVE

Answer 6

muscles derived from embryonic branchial arches (ie mescles of pharynx, larynx, & mastication)

Trigeminal V
Facial VII
Glossopharyngeal IX
Vagus X
Accessory XI

Question 7

GVE

Answer 7

consist of the cranial parasympathetic system

Oculomotor III
Facial VII
Glossopharyngeal IX
Vagus X

Question 8

Facial Nerve VII

Answer 8

GSA - nervus intermedius - sensatin from skin of acoustic meatus

GVA - NI - via greater pertrosal nerve, mucous membranes of nasopharynx & palate

SVA - NI - via chorda tympani nerve - taste from 2/3 tongue, floor of mouth, palate

SVE - muscles of facial expression, stapedius, stylohyoid, post belly of digastric

GVE - greater prtrosal nerve - arasympathetic to lacrimal glands & glands of nose & palate
- chorda tympani nerve - parasympathetic to submandubular salivary glands & sublingual salivary glands

Question 9

Glossopharyngeal Nerve IX

Answer 9

GSA - cutaneous sensation from external ear

GVA - visceral sensation from parotid gland, carotid body, carotid sinus, pharynx & middle ear

SVA - taste from post 1/3 tongue

SVE - motor to stylopharyngeus muscle

GVE - parasympathetic to parotid gland

Question 10

Vagus Nerve X

Answer 10

GSA - sensation from auricle of ear, external acoustic meatus, dura mater of posterior cranial fossa

GVA - visceral sensation from bas of tongue, pharynx, larynx, trachea, bronchi, heart, esophagus, stomach & intestines (L colic flexure)

SVA - taste from epiglottis & palate

SVE - motor to constrictor muscles of pharynx, intrinsic muscles of larynx, levator veli palatini, cricothyroid, striated muscles of superior 2/3 of esophagus

GVE - parasympathetic to smooth muscles of trachea, bronchi, cardiac muscle, digestive tract (L colic flexure)

Question 11

Accessory Nerve XI

Answer 11

cranial
SVE - motor to striated muscles of soft palate, pharynx & larynx through fibers that joint the vagus nerve

Spinal
GSE - motor to SCM & trapezius

Question 12

Otic Ganglion

Answer 12

Glossopharyngeal IX

Inferior salivary nucleus -> tympanic plexus -> lesser petrosal nerve -> OTIC GANG (synapse) -> auriculotemporal (V3)

secretion of saliva from parotid gland
dilation of arterioles

Question 13

Ciliary Ganglion

Answer 13

Oculomotor III

Edinger-Wesphal -> inferior oblique muscle -> CILIARY GABGLION -> short ciliary nerves

accomodation
pupillary muscle - constriction

Question 14

Pterygopalatine Ganglion

Answer 14

Facial VII

superior salivary nucleus -> greater petrosal nerve -> PTERYGO GANG -> zygomatic branch V2 -> lacrimal branch of V1

secretion of tears
secretion of saliva (nose/palate)

Question 15

Submandibular Ganglion

Answer 15

Facial VII

superior salivary nucleus -> NI branch VII & chorda tympani -> lingual nerve (V3) -> SUBMANDIBULAR GANG -> lingual nerve

secretion of saliva from submandibular gland & sublingual gland
dilation of arterioles