Chapter 17 - Key Vocabs The Ear Flashcards
Auditory canal
Channel that leads from the pinna to the eardrum
Auditory meatus
Auditory canal
Auditory nerve fibers
Carry impulses from the inner ear to the brain (cerebral cortex). These fibers compose the vestibulocochlear nerve (cranial nerve VIII)
Auditory tube
Channel between the middle ear and the nasopharynx; Eustachian tube
Auricle
Flap of the ear; the protruding part of the external ear, or pinna
Cerumen
Waxy substance secreted by the external ear; earwax
Cochlea
Snail shell-shaped, spirally wound tube in the inner ear; contains hearing-sensitive receptor cells.
Endolymph
Fluid within the labyrinth of the inner ear
Eustachian tube
Auditory tube
Incus
Second ossicle (small bone) of the middle ear. Anvil
Labyrinth
Maze-like series of canals of the inner ear. Includes the cochlea, vestibule, and semicircular canals
Malleus
First ossicle of the middle ear; hammer
Organ of Corti
Sensitive auditory receptor area found in the cochlea of the inner ear
Ossicle
Small bone of the ear; include malleus, incus, and stapes
Oval window
Membrane between the middle ear and the inner ear
Perilymph
Fluid contained in the labyrinth of the inner ear
Pinna
Auricle; flap of the ear
Semicircular canals
Passage in the inner ear associated with maintaining equilibrium
Stapes
Third ossicle of the middle ear. Stirrup.
Tympanic membrane
Membrane between the outer and the middle ear; eardrum
Vestibule
Central cavity of the labyrinth, connecting the semicircular canals, and the cochlea. Contains saccule and utricle for equilibrium.
What composes the “outer ear” portion?
Pinna —> External auditory canal —>tympanic membrane
P.E.T
What composes of the “middle ear” portion?
Malleus —> Incus —>Stapes —> Oval Window
M.I.S.O
What composes the “Inner Ear” portion?
Cochlea —> Organ of Corti —>Auditory Nerve Fibers
C.O.A
