Smell (SVA)

Vision (SSA)

1. Eye movements (4/6 eye muscles and levator palpebrae superioris m.) (GSE)

2. Pupil constriction and lens accommodation (parasympathetic to ciliaris m. and sphincter pupillae m.) (GVE)

Eye movements (superior oblique m.) (GSE)

1. Mastication (SVE)

2. General sensation from face, teeth, anterior 2/3 of tongue (GSA)

Eye movement (lateral rectus m.) (GSE)

1. Facial expression (SVE)

2. Lacrimation, salivary gland secretion; vasodilation (GVE)

3. Taste from anterior 2/3 of tongue (SVA)

4. Tiny bit of sensation from external ear (GSA)

Hearing and equilibrium (SSA,SSE)

1. Swallowing (stylopharyngeus m.)( SVE)

2. Salivary gland secretion (GVE)

3. Taste from posterior 1/3 of tongue (SVA)

4. Visceral sensation from baroreceptors and chemoreceptors in carotid a. (SVA)

5. General sensation from posterior 1/3 of tongue and pharynx (GSA)

1. Speech (muscles of larynx); swallowing (most muscles of the palate and pharynx) (SVE)

2. Parasympathetic functions of the pharynx, larynx, and thoracic & abdominal viscera (GVE)

3. Visceral sensation from larynx, trachea, esophagus, thoracic, & abdominal viscera, baroreceptors and chemoreceptors ini aortic arch (GVA)

4. Taste (epiglottis) (SVA)

5. General sensation from larynx and part of external ear (GSA)

Head and shoulder movements (sternocleidomastoid m. & trapezius m.) (SVE)

Tongue movements (GSE)

1. Levator palpebrae superioris m.

2. Superior rectus m.

1. Inferior rectus m.

2. Medial rectus m.

3. Inferior oblique m.

Sensory  to face, meninges adn scalp above palpebral fissure and part of nose. Three major branches:

1. Lacrimal n.

2. Frontal n.

3. Nasociliary n.

Conjunctiva, lacrimal gland, and upper lateral eyelid

Frontal sinus, scalp, forehead, medial upper eyelid

1. Supratrochlear branch

2. Supraorbital branch

Sensory to iris, cornea, medial angle of eye, ethmoid, sphenoid, and frontal sinuses, anterior nasal septum, and skin on nose via the following branches (PLICA):

1. Posterior ethmoidal branch

2. Long ciliary branch

3. Infratrochlear branch

4. Communicating branch

5. Anterior ethmoidal branch

Sensation from ethmoid and sphenoid sinuses and upper nasal cavity

Sensation from iris, cornea, conjunctiva on anterior eyeball

Sensation from the upper medial eyelid below trochlea

Sensory branch through ciliary ganglion on short ciliary nerves also carrying sensation from the iris and cornea

Sensation from ethmoid and frontal sinuses, anterior cranial fossa meninges, and nose through lateral and medial internal nasal and external nasal nerves

Sensory  to middle face from lower eyelid to upper lip; upper teeth and part of nose and nasal cavity; nasopharynx, maxillary sinus, upper teeth and roof of mouth and some meninges. It has the following branches in the pterygopalatine fossa:

"Zany People Pick Pineapples on Green Islands"

1. Infraorbital nerve

2. Posterior superior nasal branches

3. Greater palatine nerve

4. Zygomatic nerve

5. Pharyngeal nerve

6. Posterior superior alveolar branches

And in the cranium:

1. Middle meningeal nerve

INFRAORBITAL NERVE

(OF V2)

Branches to upper teeth and gums:

1. Middle superior alveolar branches

2. Anterior superior alveolar branches

Branches to the face:

1. Inferior palpebral branches

2. Lateral nasal branches

Superior labial branches

1. Posterior superior lateral nasal nerves

2. Posterior superior septal nasal nerves (the longest one is nasopalatine n.)

GREATER PALATINE N.

(OF V2)

1. Posterior inferior lateral nasal branches

2. Lesser palatine n.

ZYGOMATIC N.

(OF V2)

Gives the following branches in the orbit:

1. Zygomaticofacial n.

2. Zygomaticotemporal n.

1. Communicacting branch to lacrimal branch of V1

2. Carries postganglionic parasympathetics from pterygopalatine ganglion to the lacrimal gland

PHARYNGEAL N.

(OF V2)

Upper part of nasopharynx

POSTERIOR SUPERIOR ALVEOLAR BRANCHES

(OF V2)

To upper back teeth and gums

MIDDLE MENINGEAL N.

 (OF V2)

Sensory to the dura and distributed with the middle meningeal artery

Sensory to lower face, lower teeth and temporal region; motor muscles of mastication plus four others

1. Muscles of mastication (masseter, temporalis, lateral pterygoid, medial pterygoid)

2. Tensor palati, tensor tympani, anterior belly of the digastric m. and myolohyoid m.*

A branch of the inferior alveolar nerve that provides motor innervation to the anterior belly of the digastric m. and the mylohyoid m.

"IN LAB"

1. Inferior alveolar n.

2. Nervus spinosum (meningeal branch)

3. Lingual n.

4. Auriculotemporal n.

5. Buccal n.

INFERIOR ALVEOLAR N.

(OF V3)

Teeth in the lower jaw

1. Mental n.

2. Nerve to mylohyoid

Sensation to chin

NERVUS SPINOSUM

(MENINGEAL BRANCH)

(OF V3)

Distributed with the middle meningeal artery to supply the dura

LINGAL N.

(OF V3)

1. General sensation from anterior 2/3 of the tongue

2. Carries with it the chorda tympani (VII)

AURICULOTEMPORAL N.

(OF V3)

1. Sensory to skin of ear and temporal region

2. Carries parasympathetic fibers from otic ganglion (IX) to parotid gland

BUCCAL N.

(OF V3)

Sensory to mucous membrane of cheek

MUSCULAR INNERVATIONS OF MOTOR BRANCHES OF

FACIAL N. (VII)

Muscles of facial expression via:

1. Temporal br.

2. Zygomatic br.

3. Buccal br.

4. Mandibular br.

5. Cervical br.

Muscles behind the ear and occipitalis m.:

1. Posterior auricular br.

Muscles derived from second branchial (pharyngeal) arch:

Stylohyoid m., posterior belly of digastric m. and stapedius m.

1. Go to pterygopalatine ganglion via greater petrosal n.

2. Go to submandibular ganglion via chorda tympani

3. Postganglionic parasympathetic fibers travel from the pterygopalatine ganglion on branches of V2

4. Postganglionic parasympathetic fibers from the submandibular ganglion travel to the submandibular and sublingual salivary glands and to other small glands in the floor of the mouth

SENSORY BRANCHES OF

FACIAL N. (VII)

1. Carry  taste from anterior 2/3 of tongue via chorda tympani traveling with the lingual branch of V3

2. The geniculate ganglion is the sensory ganglion of the facial nerve (no synapses in this ganglion)

1. A separate part of VII (from a different part of the brainstem than the motor root) that contains all the sensory and parasympathetic fibers associated with VII

2. Both the motor root and nervus intermedius enter the internal acoustic meatus and then fuse with each other to form cranial nerve VII

1. General (somatic) sensation from the pharynx, posterior 1/3 of the tongue, and middle ear

2. Afferents from carotid sinus baroreceptors and from carotid body chemoreceptors (visceral sensory)

3. Taste (special sensory) from posterior 1/3 of tongue

4. Sensory ganglia: superior (jugular) ganglion and inferior (petrosal) ganglion

Stylopharyngeus: this is the only muscle derived from the third branchial (pharyngeal) arch

TYMPANIC (JACOBSON'S) N.

(OF IX)

1. Leaves the glossopharyngeal just at the base of the skull, re-enters the temporal bone and goes to the middle ear

2. Carries general sensation from the middle ear and preganglionic parasympathetic fibers through the tympanic plexus

LESSER PETROSAL N.

(OF IX)

1. Preganglionic sympathetics from tympanic plexus in the middle ear, exits through the hiatus of the lesser petrosal n. and passes across the middle cranial fossa, drops through foramen ovale to otic ganglion

2. After synapsing, postganglionic fibers travel on the auriculotemporal branch of V3 to the parotid gland

SENSORY BRANCHES OF

VAGUS N. (X)

1. General (somatic) sensation from external acoustic meatus, meninges and larynx

2. Afferents from chemoreceptors and baroreceptors in aortic arch (visceral sensory)

3. Two sensory ganglia: superior (jugular) ganglion and inferior (nodose) ganglion

1. To all muscles of pharynx, larynx, and palate (except the tensor palati and stylopharyngeus)

2. These muscles are all derived from the fourth and sixth branchial (pharyngeal) arches

1. To viscera of thorax, abdomen, and glands of pharynx and larynx

2. These preganglionic fibers synapse in terminal ganglia in organ walls

PHARYNGEAL N.

(OF X)

1. Motor to striated muscle of soft palate (palatoglossus, palatopharyngeus, levator palati, and musculus uvulae)

2. Superior and middle constrictors

SUPERIOR LARYNGEAL N.

(OF X)

1. External branch-motor to cricothyroid and part of inferior constrictor

2. Internal branch- somatic sensory inside larynx above the level of the vocal cords; parasympathetic to mucous glands

RECURRENT LARYNGEAL N.

(OF X)

1. Motor to all muscles of the larynx, except cricothyroid and to part of the inferior constrictor

2. Parasympathetic and sensory to larynx below vocal cords, and to the esophagus and trachea