hearing and equilibrium

Question 1

external ear

Answer 1

sounds wves travel via external auditory canal –> tympanic membrane –> cause vibrations

Question 2

Where are ceruminous glands and what do they produce

Answer 2

@ external auditory canal
secrete ear wax

Question 3

Where is middle ear

Answer 3

within temporal bone

Question 4

4 parts of middle ear

Answer 4

1) ossicles
2) tympanic cavity
3) round & oval windows
4) eustachian tubes

Question 5

Ossicles function

Answer 5

• Transmit sound waves to receptors @ inner ear
• Small bones located in middle ear

Question 6

Tympanic Cavity

Answer 6

Chamber in the temporal bone

Question 7

Round and Oval Windows

Answer 7

Areas at whihc the middle ear conencts to the inner ear

Question 8

Eustachian Tubes

Answer 8

Connect middle ear to nasopharynx

Question 9

Parts of Ossicles

Answer 9

1) Malleus (hammer)- most alteral & attached to tympanic membrane
2) Incus (anvil)
3) Stapes (stirrup)- smallest bone

Question 10

Inner Ear

Answer 10

1) Vestibular Apparatus (balance/equilibrium)
2) Cochlea (hearing)

Question 11

Vestibular Apparatus

Answer 11

1) semicircular canal (ROTATIONAL movement)
2) Uticle & Saccule (POSITIONAL movement)

Question 12

Cochlea

Answer 12

1) Vestibular Duct
2) Tympanic Duct
3) Cochlear Duct

Question 13

Both the cochlea and the vestibular apparatus are structured as two channels in the bone, called

Answer 13

the membranous and bony labyrinths

membranous labyrinth is within bony

Question 14

The membrane labyrinth is filled with

Answer 14

endolymph fluid

Question 15

The bony labyrinth is filled with

Answer 15

perilymph fluid