HLSC 2416- Block 4- Chap 16: Ears Questions with Correct Answers

HLSC 2416- Block 4- Chap 16: Ears Questions
with Correct Answers
auricle or pinna

what is the external ear called?

external auditory canal.

Characteristic shape serves to funnel sound waves into its opening, which is called the

__________

auditory canal

which structure terminates at eardrum, or tympanic membrane

cerumen

the auditory canal is lined with glands that secrete _________, a yellow waxy material that

lubricates and protects ear

eardrum also called tympanic membrane

which structure separates external and middle ear?

middle ear

tiny air-filled cavity inside temporal bone

- auditory ossicles

- malleus, incus, and stapes

the middle ear contains tiny ear bones or ___________, what are they?

•Conducts sound vibrations from outer ear to inner ear

•Protects inner ear by reducing amplitude of loud sounds

, • allows equalization of air pressure on each side of TM so that it does not rupture.

what are the three functions of the middle ear?

Eustachian tube

________________ allows equalization of air pressure on each side of TM so that it does not

rupture.

bony labyrinth

the inner ear contains the _________________, which holds sensory organs for equilibrium

and hearing.

Vestibule and semicircular canals

_______ and ________ within bony labyrinth compose the vestibular apparatus.

Cochlea

________ contains central hearing apparatus.

- peripheral

- brainstem

- cerebral cortex

what are the three levels of the auditory system?

peripheral

ear transmits sound and converts its vibrations into electrical impulses

brainstem

locates direction of sound in space and identify the sound; binaural interaction.

Cranial nerve VIII (Vestibulocochlear)