Special senses: Eye and ear

Question 1

Divisions of ear

Answer 1

external ear (collects sound waves), middle ear (conveys sound waves to oval window), and internal ear (receptors for hearing and equilibrium)

Question 2

ossicles of ear

Answer 2

malleus (hammer), incus (anvil), and stapes(stirrup)

Question 3

2 muscles in the middle ear and finction

Answer 3

tensor tympani (attached to malleus and dampens vibrations) and stapedius (attached to stapes and dampens vibrations)

Question 4

structures of organ of corti

Answer 4

includes basilar membrane (moves), hair cells, and a tectorial membrane (does not move)

Question 5

path of vibration from exteral ear to hair cells of the cochlea

Question 6

where does auditory tube connect

Answer 6

connects middle ear with nasopharynx and equilibrates pressure

Question 7

Difference between static and dynamic equilibrium

Answer 7

static is maintenance of body relative to force of , dynamic is maintenance of body relative to sudden movmement/acceleration

Question 8

What structrue within the utricle and saccule contains receptors for static equilibrium

Answer 8

otolithic organs

Question 9

otolith

Answer 9

contain receptors for static equil. and contribute to dynamic. A membrane that sits on top of hair cells and moves with gravity to signal movement of body

Question 10

structure within semicircular canals contributes to dynamic equilibrium

Answer 10

includes fluid and hair cells that detect movement

Question 11

what activates the crista within semicircular canals