The Ear Flashcards
What is the majority of the pinna innervated by?
Greater auricular nerve
Give 3 nerves which give sensation to the EAM.
Auriculotemporal
vagus
Glossopharyngeal
Why is it important to look for alternative site of pathology with otalgia?
Overlapping sensory innervation of the ear with other parts of the body.
What makes up the external ear?
Pinna + EAM + lateral surface of the tympanic membrane
Give 3 pinna conditions
Chondritis
Ramsay hunt syndrome
Pinna haematoma
Give 4 symptoms of Ramsay hunt syndrome
Tinnitus
Vertigo
Hyperacusis
Vesicles forming
Ceruminous glands are found within the medial 1/3 of the EAM.
T or F?
True
What is the central tip of the tympanic membrane called?
What 2 parts of the malleus can be seen on the tympanic membrane?
Umbo
Short process of the malleus
Manubrium (handle of) malleus
How can you tell a right eardrum from a left?
Whichever side (to you) the pars flaccida is pointing to
What is glue ear caused by?
Why is hearing affected?
Tx?
What colour is the fluid?
Build up of negative pressure and fluid in the middle ear
TM and ossicle motility is affected
Tympanostomy tube (grommets)
Straw
Why are infants more at risk of developing middle ear infections?
Shorter more horizontal ET
Give 3 intracranial complications of acute otitis media.
Meningitis
Sigmoid sinus thrombosis
Temporal lobe abscess
What is the round windows role?
Prevent scattering of sound waves
Which structure in the inner ear reponds to gravitational pull and rotational acceleration in order to maintain balance?
Vestibule (utricle and saccule)
Give symptoms of menierres disease.
Tinnitus
Vertigo - hours to days
Hearing loss
Ear fullness (increased endolymph - increased pressure)
