Flashcards in ear anatomy Deck (18):
1
part of the ear Involved in hearing only
external ear
2
Structures of the external ear
pinna and external auditory canal
3
Narrow chamber in the temporal bone
Lined with skin
external auditory canal
4
Ceruminous (wax) glands are present
external auditory canal
5
Ends at the tympanic membrane
external auditory canal
6
Air-filled cavity within the temporal bone
Only involved in the sense of hearing
tympanic cavity
7
Bones of the Tympanic Cavity
Malleus (hammer)
Incus (anvil)
Stapes (stirrup)
8
These transfer sound to the inner ear
ossicles
9
Includes sense organs for hearing and balance
Filled with perilymph
Inner Ear or Bony Labyrinth
10
A maze of bony chambers within the temporal bone
Inner Ear or Bony Labyrinth
11
structures of the inner ear
Cochlea
Vestibule
Semicircular canals
12
Located within the cochlea
Receptors = hair cells on the basilar membrane
organ of corti
13
Receptor cells for equilibriumare in two structures
vestibule and semicircular canals
14
– receptors in the vestibule
Report on the position of the head
Send information via the vestibular nerve
maculae
15
(tiny stones) float in a gel around the hair cells
otoliths
16
hair cells of macule are embedded in
otolithic membrane
17
– receptors in the semicircular canals
Crista ampullaris
18