Nerves Flashcards
What branches does the facial nerve split into?
temporal
zygomatic
buccal
mandibular
cervical
Where does the cranial portion of the facial nerve enter the skull
At internal acoustic meatus
What does chorda tympani do
Joins the lingual nerve to pick up special sensory information from anterior 2/3 tongue
Carries parasymp innervation to lacrimal, submandibular and sublingual glands
What nerve supplies all the muscles of the tongue except palatoglossus
Hypoglossal nerve
What supplies the palatoglossus
Vagus nerve
What innervates the muscles of the soft palate + pharynx
Pharyngeal plexus of CNX except tensor veli palitini (V3)
All muscles of the pharynX are innervated by CNX. Apart from the STYLOpharyngeus which is GLOSSopharyngeal
What is the sensory innervation of the gag reflex
Glossopharyngeal CNIX
What is the motor innervation of the gag reflex
CN IX, X, XII, V3
Where does the vestibulocochlear nerve and facial nerve exit the skull?
Internal acoustic meatus
What nerves exit at the jugular foramen
Glossopharyngeal, vagus and accessory nerve and internal jugular vein
What exits at the foramen rotundum
Maxillary division of trigmeminal
What is the thinnest part of the skull commonly fractured
Pterion: where frontal, sphenoid, temporal and parietal bones meet
What provides parasymp innervation to the parotid gland
Auriculotemporal branch of mandibular of trigeminal
What are the primary muscles of mastication?
Masseter. Temporalis. Lateral pterygoid. Medial pterygoid
Where are meiobomiam glands found
Tarsal plates (sebaceous glands)
What does the accessory nerve innervate
Sternocleidomastoid and trapezius muscles runs in the posterior triangle of the neck
What nerves run in the cavernous sinus
CN 3,4,5,6
What part of the ethmoid bone transmits CN1
Cribiform plate
What CN supplies muscles of the tongue
Hypoglossal apart from palatoglossus (vagus)
What is the autonomic nerve supply to the parotid gland
Lesser petrosal - branch of glossopharyngeal
What does the tensor tympani do and its nerve supply
Reduces sound while chewing, Attaches to malleus, CN V3
What does the stapedius muscle do and its nerve supply
Dampens sound received by the stapes, Attaches to stapes, facial nerve
Sensory innervation of naso/oropharynx
CN IX
Sensory innervation of laryngopharynx
CN X
Semicircular canals detect ___ change in movement
Angular
Urticle and saccule detect ___ change in movement
Horizontal/vertical
Branchial cysts are commonly from which arch
2nd
What supplies all the intrinsic muscles of the larynx
Recurrent laryngeal nerve except the cricothyroid
