OB/ENT Flashcards
(37 cards)
mechanical movement of external and middle ear in response to sound waves
Conductive hearing
pertaining to ears nose and throat
otorhinolaryngeal
sensory and neural pathways that convert sound to impulses transferring them from inner ear to brain
sensorineural hearing
What are the three parts of the ear?
outer, middle, inner
What are the two parts of the nose?
external protrusion, internal nasal cavities
What are the three parts of the mouth and throat?
Mouth, larynx, pharynx
specialized clear fluid that fills membranous labyrinth
Endolymph
specialized epithelium responsible for tracking head movement and acceleration
macula
very small hardened “ear stones” composed of protein and calcium phosphate providing weight and respond readily to gravity
otoliths
fluid that surrounds the membranous labyrinth and acts like CFS; buffer
perilymph
skin flap that acts like trumpet, funneling sound waves
auricle
what do auditory sweat glands secrete?
cerumen
How long is the external auditory meatus?
about 3cm long
What are the three auditory ossicles of the middle ear?
tympanic membrane, auditory ossicles, Eustachian tube
Connects to inner surface of tympanic membrane, provides primary translation of sound waves into movement
Malleus
What separates the outer and middle ear?
tympanic membrane
Interface between hammer and stirrup, transfers movement of hammer to stirrup
Incus (anvil)
connects incus to oval window of inner ear
stapes (stirrup)
composed of composite bone and cartilage with mucosal lining that extends downward to throat
Eustachia (auditory tube)
Contains primary sense organs providing balance and hearing to the body
inner ear (otic capsule)
Central section of bony inner ear and primary connection between middle and inner ear
vestibule
what connects the staples to the vestibule?
oval window
bulbous area where each semicircular canal connects with vestibule
ampulla
What kind of fluid is found in the ampulla?
Endolymph