Mcat: The Ear And Hearing

Front 1

The middle ear contains three tiny bones known as the ossicles:

Back 1

malleus, incus, and stapes.
hammer, anvil, and stirrup.

Front 2

What connects the middle ear to the nasopharynx is to help keep middle ear pressure the same as air pressure? Causes ear popping at high altitudes?

Back 2

Eustachian tubes
(Auditory tube)

Front 3

Part of the ear that amplifies vibrations

Back 3

Middle ear

Front 4

Cochlea: Basilar Membrane, hair cells, and tectoral membrane are collectively known as

Back 4

Organ of Corti

Front 5

Primary site at which auditory stimuli are detected?

Back 5

Organ of Corti (in the cochlea)

Front 6

Cochlea and Semicircular canals have one thing in common

Back 6

they contain hair cells that detect motion.
Detects the acceleration of the head

Front 7

Utricle and Saccule

Back 7

Inner ear.
Monitor static equilibrium and Linear Acceleration

Front 8

Talk about vibration and the cochlea

Back 8

If the conductance through the middle ear bones reaches the oval window and transmits vibrations to the cochlea, it stimulates the hairs to bend. the displacement opens ion channels in the hair cells which results in a neurotransmitter to release. Dendrites from bipolar auditory afferent neursons are stimulated by the neurotransmitter and sound vibrations are converted to nerve impulses. The action potentials pass through the auditory nerve to the brain.

Front 9

What happens if the auditory nerve is severed?

Back 9

No hearing of any kind is possible.

Front 10

if the middle ear is not functional, can sound still be detected?

Back 10

Bone conductance can still stimulate the cochlea.