Ear

Question 1

Receptor cells in the ear

Answer 1

Hair cells in the organ of corti

Hair cells convert the physical stimuli to electrical signals

Question 2

Outer ear

Answer 2

Pinna(auricle)
External auditory canal
Tympanic membrane (eardrum)

Question 3

Middle ear also called ossicles

Answer 3

Malleus (hammer)
Incus(anvil)
Stapes(stirrup)

Transmit and amplify the vibration

Question 4

Inner ear contains

Answer 4

Cochlea
Vestibule (utricle and saccule for linear vibration)

Semicircular canals (rotational acceleration acceleration)

Question 5

Outer wall of the inner ear

Answer 5

Bony labyrinth

Question 6

Bony labyrinth filled with

Answer 6

Perilymph

Question 7

Membranous labyrinth filled with

Answer 7

Endolymph

Question 8

Cochlea

Answer 8

Detects sound

Question 9

The Cochlea contains 3 chambers or scalae

Answer 9

1. vestibular duct (containing perilymph)
2. tympanic duct (containing perilymph)
3. cochlear duct (containing endolymph)

Question 10

Organ of Corti

Answer 10

Actual hearing apprautus
Rest on the basilar membrane and has hair cells bathed in endolymph
On top of it is the tactorial membrane

Question 11

Utricle and Saccule

Answer 11

Part of vestibule and detect linear acceleration

Question 12

Semicircular canals

Answer 12

Detect rotational acceleration

Question 13

Auditory pathway

Answer 13

Pinna > external auditory canal > tympanic membrane > malleus > Incus > Stapes > Oval Window > Perilymph in Cochlea > basilar membrane > hair cells > vestibule cochlear nerve > brain stem > medial geniculate nucleus of thalamus > auditory cortex (temporal lobe)

Question 14

Basilar membrane organized?

Answer 14

Tonically… high pitch sounds causes vibrations at the base of the cochlea and low pitch sounds cause vibrations at the apex of the cochlea