Full review Flashcards by Hunter Garrett

Name motor/sensory structure for CN I

sensory to nasal cavity

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Name motor/sensory structure for CN II

sensory for eye

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Name motor/sensory structure for CN III

GSE: motor to 5 extraocular muscles (levator palpebrae superioris, superior rects, inferior rectus, medial recuts, inferior oblique)

GVE: parasympathetic motor innervationto sphincter pupillae and ciliary muscles

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Name motor/sensory structure for CN IV

GSE: motor to superior oblique

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Name motor/sensory structure for CN VI

GSE: motor to lateral rectus

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Name motor/sensory structure for CN V

GSA: skin of face & scalp, conjunctiva globe, meninges, gums, external ear, nasal cavity & sinuses, teeth, orbit, oral cavities, ant 2/3 of tongue, soft palate, nasopharynx

BE: (V3 only) motor: muscles of mastication(med & lat pterygoid, temporalis, masseter); tensor tympani, tensor veli palatini, mylohyoid, ant belly of digastric

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Name motor/sensory structure for CN VII

BE: motor: muscles of facial expression, stapedius, post belly of digastric, stylohyoid, occipitalis, auricularis muscles

GVE: parasympathetic motor to submandibular, sublingual, lacrimal glands and mucous glands of the membranes of the oral cavity, nasal cavity and soft palate

GSA: sensory to external ear

SA: taste anterior 2/3 of tongue and soft palate

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Name motor/sensory structure for CN VIII

sensory to cochlear, vestibular for hearing and equilibrium

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Name motor/sensory structure for CN IX

SA: sensory: taste-posterior 1/3 of tongue

GSA: sensory to ext. ear, mucous membrane of tympanic cavity & membrane, auditory tube, posterior 1/3 of tongue, oropharynx, posterior nasopharynx

GVA: sensory from carotid sinus and body

BE: motor: stylopharyngeus

GVE: parasympethetic innervation to parotid gland

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Name motor/sensory structure for CN X

GSA: sensory from ext ear, lower 1/3 of pharyngeal mucosa & esophagus, laryngeal mucosa, root of tongue

GVA: sensory from carotid body & baroreceptors, viscera of thorax, foregut, midgut

SA: taste from base of tongue & epiglottis (roof of tongue)

BE: motor: larynx muscles, palate muscles except tensor veli palatini, pharynx muscles except stylopharyngeus

GVE: parasymp innervation to viscera, smooth muscle and glands in trachea, esophagus and thoracic abdominal viscera

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Name motor/sensory structure for CN Xi

motor: sternocleidomastoid, trapezius muscles

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Name motor/sensory structure for CN XII

tongue muscles except palatoglossus

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Name motor/sensory structure for C1-C3 fibers

strap muscles

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What innervates the skeletal muscles of the eye?

CN III, IV, VI

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What innervates the muscles of orbit?

GSE: CN III, IV, VI

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What innervates muscles of the tongue?

GSE: CN XII

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What does V3 (BE) innervate?

Muscles of mastication, tensor tympani, tensor veli palatini, ant. belly of digastric, mylohyoid

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What does CN VII (BE) innervate?

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

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What does CN IX (BE) innervate?

stylopharyngeus muscle

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What does CN X (BE) innervate?

muscles of larynx, pharynx (except stylopharyngeus), palate (tensor veli palatini)

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What innervates so sternocleidomastoid and trapezius?

CN XI (GSE)

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What provides parasympathetics to constrictor pupilae and ciliary muscles?

CN III (GVE)

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What provides parasympathetics to smooth muscles of trachea and esophagus?

CN X (GVE)

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CN VII - greater petrosal nerve (GVE) provides innervation to what?

parasympathetic fibers to lacrimal gland and mucous glands of nasal cavity and palate

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What do CN VII-chorda tympani (GVE) provide innervation to?

parasympathetic fibers: submandibular and sublingual glands

What provides parasympathetic fibers to the parotid gland?

CN IX - lesser petrosal nerve (GVE)

What provides glands of the larynx, pharynx, esophagus, and viscera of thorax, viscera of abdomen?

CN X (GVE)

What provides taste sensory innervation?

CN VII, IX, X

What provides olfaction sensory innervation?

CN I

What provides vision sensory information?

CN II

What provides hearing and vestibular sensation innervation?

CN VIII

What provides sensory information to skin of face and scalp to vertex innervation?

CN V (GSA)

What provides sensory innervation to the skin of posterior surface of external ear?

CN VII, IX (GSA)

What provides sensory innervation of skin of posterior ear and external acoustic meatus?

CN X (GSA)

What provides sensory innervation to mucus membranes and structures of oral and nasal cavities and orbit

CN V (GSA)

What provides sensory innervation to the mucus membranes of the pharynx?

CN IX, X (GSA)

What provides sensory innervation to the mucus membranes of the larynx?

CN X (GSA)

What provides sensory innervation to the tympanic cavity and auditory tube?

CN IX (GSA)

Describe the parasympathetic distribution of CN III

pregangs travel with CN III to ciliary ganglion in orbit postgangs leave ciliary ganglion and distribute mostly with short ciliary nerves to sphincter pupillae muscle and ciliary muscle of globe of the eye

Describe the parasympathetic distribution of CN VII wrt chorda tympani nerve

pregangs travel in chorda tympani which joins lingual nerve to reach submandibular ganglion located in submandibular triangle postgangs from submandibular gang distribute via direct branches to submandibular and sublingual salivary glands and via the lingual nerve to mucous glnads in the floor of the mouth

Describe the parasympathetic distribution of CN VII wrt to the greater petrosal nerve

pregangs of CN VII travel in greater petrosal n. which component of N. to pterygoid canal to reach the PP gang located in PP fossa postgangs leave PP gang to distribute with branches of V2 to lacrimal gland and mucous glands of nasal cavity and palate

Describe the parasympathetic distribution of CN IX

pregangs travel in tympanic and lesser petrosal nerve to otic gang in the infratemporal fossa postgangs from otic gang travel with auriculotemporal n. of V3 to parotid gland

Glandular secretion in the head is a function of what 2 nerves? What are the 2 exceptions and what controls them?

CN VII and IX sweat and sebaceous glands are under sympathetic control

All sympathetic innervation in the head is postganglionic from what? What does it travel with?

superior cervical chain ganglion travels with external and internal carotid arteris and all their branches to head (carotid nerve plexus)

How do preganglionics reach the superior cervical ganglion?

upper 1 or 2 segments of the thoracic spinal cord

What provides general sensation to the anterior 2/3 of the tongue?

lingual nerve of V3 (GSA)

What provides taste innervation to the anterior 2/3 of the tongue?

chorda tympani nerve of CN VII that travels with lingual nerve

What provides the posterior 1/3 of the tongue with general sensation? Taste?

GSA: lingual branches of IX SA: lingual branches of IX

What provides general sensation to the epiglottic region? taste sensation?

GSA: internal branch of superior laryngeal nerve of CN X SA: taste: internal branch of superior laryngeal nerve of CN X

What provides motor innervation to the tongue, both intrinsic and extrinsic muscles?

GSE: XII

Give both things that the chorda tympani nerve of CN VII gives

1. taste from anterior 2/3 of tongue (SVA) 2. pregangs to submandibular ganglion (GVE)

Name what the greater, lesser and deep petrosal nerves do

greater: CN VII-pregangs parasymp to PP ganglion (GVE) lesser: CN IX-pregangs parasymp to otic ganglion (GVE) deep: **postganglionic sympathetic from internal carotid plexus with cell bodies in the superior cervical ganglion -** fibers travel with nerve to pterygoid canal (GVE)

What are the 3 main functions of the parasympathetics of the head?

1. constrict pupil 2. contract ciliary muscle 3. stimulation of secretion (except sweat, sebaceous glands)

Where can the preganglionic cell bodies of the parasympathetics of the head be locaed?

nuclei of CN III, VII, IX, X in brain

Where are the location of postganglionic cell bodies of parasympathetic innervation in the head?

terminal ganglia

What ganglion and nerve is associated with ciliary and constrictor pupillae muscles?

CN III via ciliary ganglion

What are the CN and associated ganglion associated with salivary glands?

CN VII via PP ganglion to lacrimal gland CN VII via submandibular ganglion to submandibular/sublingual ganglion CN IX via otic ganglion to parotid gland

What are the functions of the sympathetic innervation in the head?

1. sweat glands 2. vasomotor 3. arrector pili muscle 4. dilator pupillae muscle 5. superior tarsal muscle

Where are the preganglionic cell bodies of sympathetic innervation to head? postganglionic?

preganglionic: intermediolateral cell column in cord T1-T2 postganglionic: superior cervical sympathetic ganglion

Describe the parasympathetic innervation to the parotid gland

CN IX leaves jugular foramen to the superior, inferior ganglion then gives rise to the tympanic nerve (GSA, GVE) where it becomes the lesser petrosal at the mastoid process to synapse in the otic ganglion then the AT nerve innervates the parotid gland

Describe the distributions of the CN X

CN X leaves jugular foramen to the superior ganglion to give off auricular branch to the external ear then to inferior ganglion which gives off a pharyngeal branch that gives to superior constrictor and soft palate (BE) and internal laryngeal n. (GSA,GSE, SA) above the vocal fold and the external laryngeal n below