Cranial Nerves

Front 1

what are the 12 cranial nerves? note they are in pairs.

Back 1

olfactory, optic, oculomotor, trochlear, trigeminal, abducens, facial, vestibulocochlear, glossopharyngeal, vagus, spinal accessory and hypoglossal (Oh oh oh to touch a fresh virgin's glowing vagina, say hooray)

Front 2

what nerve components provide sensory information from somatic structures like skin and skeletal muscle?

Back 2

GSA

Front 3

what nerve components provide sensory information from visceral organs like heart, lungs, etc?

Back 3

GVA

Front 4

what nerve components act as lower motor neurons to skeletal muscle derived from somites?

Back 4

GSE

Front 5

what nerve componenets act as autonomic messengers?

Back 5

GVE

Front 6

what nerve components act provide sensory information for vision, hearing and balance?

Back 6

SSA

Front 7

what nerve components provide sensory information for smell and taste?

Back 7

SVA

Front 8

what nerve components act as lower motor neurons to skeletal muscle of branchial/pharyngeal arch origin?

Back 8

SVE

Front 9

what major part of the brain does the olfactory nerve arise from and what is its main function (nerve component)?

Back 9

the cerebrum and it is SVA for olfaction (smell)

Front 10

around what brain region does the optic nerve arise from and what is its main function (nerve component)?

Back 10

inferior to thalamus and it is SSA for vision, note that it is really not a nerve, but an extension of the brain.

Front 11

the oculomotor nerve exits from what aspect of the brain and what is its main function (nerve component)?

Back 11

It arises from the midbrain. GSE portion innervates all the extrinsic eye muscles (levator, palpebrae, and superioris) except the superior oblique which has GSE from the trochlear nerve and the lateral rectus which has GSE from the abducens nerve. oculomotor nerve also has GVE for the intrinsic eye muscles (smoothe muscles) which are the constrictor pupilae and cilliary muscles.

Front 12

What part of the brain do the trochlear and abducens nerves exist?

Back 12

trochlear - midbrain
abducens - pons

Front 13

what part of the brain does the vestibulocochlear nerve exit and what is its main function (nerve component)?

Back 13

it exits from the pons and it has SSA's for balance, equilibrium and hearing

Front 14

where does the hypoglossal nerve exit the brain and what is its main function (nerve component)?

Back 14

it exits from the medulla and it has GSE fibers that act on the muscles of the tongue except the palatoglossus which is innervated by the vagus and connects the tongue to the palate

Front 15

what branchial arches give rise to what cranial nerves?

Back 15

1st arch to the trigeminal
2nd arch to the facial
3rd arch to the glossopharyngeal
4th and 6th arches to the vagus (note 5th arch is lost in humans)

Front 16

where does the trigeminal exit the brain?

Back 16

the pons

Front 17

the trigeminal nerves GSA components innervate what structures?

Back 17

face, scalp, oral and nasal cavities, sinuses, meninges, anterior 2/3 of tongue, anterior part of auricle of ear, external auditory canal, and tympanic membrane.

Front 18

The SVE portion of the trigeminal innervate what?

Back 18

the muscles of mastication (temporalis and masseter) and the "matt" muscles (mylohyoid, anterior belly of digastric, tensor tympani, and tensor veli palatini).

Front 19

The SVE portion of the facial nerve does what?

Back 19

innervates muscles of facial expression and posterior belly of digastric, stylohyoid, and stapedius muscles

Front 20

the GVE portion of the facial nerve does what?

Back 20

innervates the lacrimal, submandibular, and sublingual glands

Front 21

the GVA portion of the facial nerve does what?

Back 21

provides sensory information from the lacrimal, submandibular, and sublingual glands

Front 22

the SVA portion of the facial nerve does what?

Back 22

senses taste on the anterior 2/3 of the tongue, and the soft palate

Front 23

the GSA of the facial nerve does what?

Back 23

provides sensory information from the small part of the auricle, external auditory canal, and tympanic membrane

Front 24

the SVE portion of the glossopharyngeal nerve does what?

Back 24

innervates the stylopharyngeus muscle

Front 25

the GVE portion of the glossopharyngeal nerve does what?

Back 25

innervates the parotid gland

Front 26

the SVA portion of the glossopharyngeal nerve does what?

Back 26

provides taste information from the posterior 1/3 of the tongue

Front 27

the GVA portion of the glossopharyngeal nerve does what?

Back 27

provides sensory information from the posterior 1/3 of the tongue, pharynx (nasal and oral), part of soft palate, middle ear, carotid body and sinus, and parotid gland.

Front 28

the GSA portion of the glossopharyngeal nerve does what?

Back 28

provides sensory information from the small part of the auricle, external auditory canal, and tympanic membrane.

Front 29

otalgia (ear pain) may occur via irritation of what cranial nerves?

Back 29

upper cervical or CN V, VII, IX, or X

Front 30

what nerves provide major and minor innervation to the auricle?

Back 30

major is via CN V (auriculotemporal), C2 (great auricular nerve), and C2,3 (lesser occipital nerve). Minor innervation is via CN VII, IX, X.

Front 31

The external auditory canal and tympanic membranes are innervated by what nerves?

Back 31

CN V, VII, IX, and X

Front 32

what nerve and components are found in the semilunar ganglia?

Back 32

V, GSA

Front 33

what nerve and components are found in the geniculate ganglia?

Back 33

VII, GSA, SVA, GVA

Front 34

what nerve and components are found in the spiral and vestibular ganglia?

Back 34

VIII and SSA

Front 35

what nerves and components are found in the superior and inferior ganglia?

Back 35

IX:GSA, GVA, SVA
X: GSA, GVA, SVA

Front 36

what nerve is found in the ciliary ganglia?

Back 36

III

Front 37

what nerve is found in the pterygopalatine and submandibular ganglia?

Back 37

VII

Front 38

what nerve is found in the otic ganglia?

Back 38

IX

Front 39

what nerve is found in the walls of organs?

Back 39

vagus

Front 40

what nerves are found in the superior cervical ganglia?

Back 40

sympathetics to the head

Front 41

the SVE portion of the vagus nerve innervates what?

Back 41

muscles of the pharynx, larynx, and soft palate except stylopharyngeus and tensor veli palatini

Front 42

the GVE portion of the vagus nerve innervates what?

Back 42

thoracic and ab viscera and gut to the left colic flexure.

Front 43

the GVA portion of the vagus nerve recieves information from what?

Back 43

lower pharynx (laryngopharynx), entire larynx, and fibers from thoracic and ab viscera

Front 44

the SVA portion of the vagus nerve provides sensory info from what?

Back 44

taste around the epiglottis

Front 45

the GSA portion of the vagus nerve do what?

Back 45

provide sensory info from the small part of the auricle, external auditory canal, and tympanic membrane