Unit 3: Ear nose mouth

The external ear runs from what points?

auricle to tympanic membrane

The middle ear runs from what to what?

tympanic membrane to medial wall

What nerve provides the majority of sensory information to the ear and stems from C2-C3?

Great Auricular n.

What are the names of the 2 muscles in the ear?

tensor tympani, stapedius

What connects the mid ear to the nasopharynx?

pharyngotympanic tube

What 2 structures lie near each other in the ear that allow us to hear our heart beat when we experience a massive spike in blood pressure?

cochlea, carotid a.

What nerve processes hearing?

cochlear

What structures make up the vestibular apparatus?

semicircular canals, vestibule

What 3 aa. supply blood to the nasal cavity?

ophthalmic, maxillary, facial

What is the indentation where the teeth are?

alveolus

what is the actual bit of gum that covers the alveolar bone?

gingiva

what is the part of the tooth that is found above the gum?

crown

what aspect of the tooth found below the gum?

root

what is the part of the tooth where the crown and the root meet?

neck

what is the area in the tooth where the neurovasculature of the tooth live?

root canal

What nerve innervates the top teeth?

CNV2 - maxillary

what nerve innervates the bottom teeth?

CNV3 mandibular n.

what nerve does both sensory and motor innervation of the posterior 1/3 of the tongue

CNIX glossopharyngeal

The __ nerve provides sensory information to the anterior 2/3 of the tongue while the _ nerve provides motor innervation to the anterior 2/3 of the tongue

lingual, chordotympany

what tongue muscle is responsible for retrusion and curling that also plays the main role in swallowing?

styloglossus

What 3 tongue muscles are innervated by CNXII?

genioglossus, hypoglossus, styloglossus

The palatoglossus m. does what action and is innervated by what?

elevation, CNX

The hypoglossus m. does what 2 actions?

depression, retrusion

the genioglossus m. does what actions?

depression, protrusion

The nasal cavity is innervated by what 3 nerves?

CNI, V1, V2