2nd order questions

zygomaticus major muscle innervation

zygomaticus major muscle innervation

upper buccal branches of facial nerve and zygomatic branch

zygomaticus minor muscle innervation

buccal branches of facial nerve

orbicularis oris muscle innervation

lower buccal and marginal mandibular branches of facial nerve

depressor anguli oris muscle innervation

marginal mandibular branches of facial nerve

buccinator muscle innervation

zygomatic and buccal branches of facial nerve

frontalis muscle innervation

temporal and zygomatic branches of facial nerve

Platysma muscle innervation

cervical branches of facial nerve

parotid gland innervation

glossopharyngeal (IX)

masseter muscle innervation

CN V3

SCM muscle innervation

accessory nerve

omohyoid muscle innervation

ansa cervicalis (C1-C3)

sternohyoid muscle innervation

ansa cervicalis (C1-C3)

thyrohyoid muscle innervation

C1 of the cervical plexus

a branch of the ventral ramus of C1 from the cervical plexus, which courses with the hypoglossal nerve

sternothyroid muscle innervation

ansa cervicalis (C1-C3)

cricothyroid muscle innervation

vagus nerve (CN X)

Trapezius Innervation

accessory nerve

submandibular gland innervation

chorda tympani branch of the facial nerve (CN XII)

thyroid gland innervation

Parasympathetic fibers from the vagus nerve

trachea innervation

recurrent laryngeal branch of the vagus

temporalis muscle innervation

deep and superficial temporal branches of the mandibular nerve (V3)

lateral and medial pterygoid innervation

CN V3

anterior belly of the digastric innervation

mylohyoid nerve

Carotid sinus innervation

glossopharyngeal nerve

carotid body innervation

Glossopharyngeal nerve (CN IX)

posterior belly of digastric innervation

the digastric branch of the facial nerve (cranial nerve 7)

mylohyoid muscle innervation

mylohyoid nerve branch of the inferior alveolar nerve (branch of the mandibular nerve)

stylohyoid muscle innervation

facial nerve (CN VII)

lingual nerve innervates

the mucosa of the anterior two-thirds of the tongue

larynx innervation

Vagus nerve (CN X)

Olfactory nerve components

smell

Abducens nerve components

somatomotor

Trochlear nerve components

somatomotor

Optic nerve components

vision

oculomotor nerve components

parasymp/somatomotor

Hypoglossal nerve components

somatomotor

Accessory nerve components

somatomotor

Trigeminal nerve Components

somatosensory/somatomotor

Vestibulocochlear nerve components

hearing/balance

Vagus nerve components

parasymp/SM/SS/VS/taste

Glossopharyngeal nerve components

parasymp/SM/SS/VS/taste

Facial nerve Components

parasymp/SM/SS/taste

Olfactory Nerve (CN I) foramen

Foramina cribriform plate

Optic nerve (CN II) foramen

Optic Canal

Oculomotor nerve (CN III) foramen

superior orbital fissure

Trochlear nerve (CN IV) foramen

superior orbital fissure

Ophthalmic nerve (CN V1) foramen

superior orbital fissure

Maxillary branch (CN V2) foramen

foramen rotundum

Mandibular branch (CN V3) foramen

foramen ovale

middle meningeal artery foramen

foramen spinosum

Abducens (CN VI) foramen

superior orbital fissure

Facial (CN VII) foramen

internal acoustic meatus

Vestibulocochlear (CN VIII) foramen

internal acoustic meatus

Glossopharyngeal (CN IX) foramen

jugular foramen

Vagus (CN X) foramen

jugular foramen

Accessory (CN XI) foramen

jugular foramen
ascends through the foramen magnum

Hypoglossal (CN XII) foramen

hypoglossal canal

internal carotid artery foramen

carotid canal

Carotid sinus function

Baroreceptor for sensing changes in blood pressure

where does the CCA bifurcate

C3-C4 vertebral level

carotid body function

chemoreceptor for sensing changes in oxygen levels (hypoxia)

Frontalis muscle function

raises eyebrows

Orbicularis oculi function

closes eyelids

Zygomatic Major function

smiling

Zygomatic minor function

pulls lip upward and backwards, sad expression

Orbicularis oris function

purses lips (for whistling, kissing, speech)

Buccinator function

compresses cheek

Platysma function

depresses the angles of the mouth when grimacing

lateral rectus innervation

abducens nerve (CN VI)

inferior oblique innervation

Oculomotor nerve (CN III)

inferior rectus innervation

Oculomotor nerve (CN III)

superior oblique innervation

Trochlear nerve (CN IV)

Mnemonic

A memory device that helps is a bogus chemical formula: SO4, LR6,AO3where AO stands for"all others".

Levator palpebrae superioris muscle innervation

Oculomotor nerve (CN III)

superior rectus innervation

Oculomotor nerve (CN III)

medial rectus innervattion

Oculomotor nerve (CN III)

lacrimal gland innervation

lacrimal nerve

LPS innervation

SM from CN III (voluntary control)

Superior tarsal muscle innervation

symp/post CN V1

cornea innervation

short and long ciliary nerves with SS axons

innervation of skin on the upper lateral corner of the eyelid

lacrimal nerve

lacrimal nerve components

SS, para/post

Levator palpebrae superioris components

SS axons for innervating the cornea and conjunctiva, and symp/post for innervating the dilator pupillae muscle

Long ciliary nerves components

SS to cornea/bulbar conjunctiva and sympathetics to the dilator pupillae muscle.

Nasociliary Nerve component:

SS, symp/post.

Ophthalmic nerve (CN V1) component

SS
The mnemonic NFL (National Football League) is helpful in remembering the three nerves from medial to lateral: Nasociliary, Frontal, Lacrimal

short ciliary nerve components

SS, symp/post, para/post.

somatosensory axons to the cornea and the bulbar conjunctiva

para/post axons to the ciliary muscle and the sphincter pupillae muscle

symp/post axons to the dilator pupillae muscle

frontal nerve components

SS

Supraorbital nerve component

SS

Pupillary Light Reflex

afferent- light stimulates CN II
efferent-CN III constricts the pupilvia ciliary nerves to the pupillary sphincter muscle

Oculomotor nerve (CN III) Innervates all eye muscles except

lateral rectus muscle and superior oblique muscle

Levator palpebrae superioris function

Responsible for lifting the eyelid after blinking

Superior tarsal muscle function

maintaining a resting "open" position of the upper eyelid

All rectus muscles insert into

the common tendinous ring (proximally)

all oblique muscles insert into

the bony orbital walls (proximally)

extraocular muscles insert into

the sclera (distally)

Superior Rectus action

Elevation + aDduction

Inferior Rectus action

Depression + aDduction

Lateral Rectus action

aBduction

Medial Rectus action

aDduction

Superior Oblique action

Depression + aBduction