Kenna - Auditory & Visual Systems

Question 0

outer 1/3 of the external auditory meatus contains what?

Answer 0

sebaceous and ceruminous glands

Question 1

What is the function of the external ear?

Answer 1

Collect and conduct sound

Question 2

what 2 arteries supply blood to the external ear?

Answer 2

superficial temporal and posterior auricular a.

Question 3

what is the function of the middle ear?

Answer 3

to transfer sound waves into fluid waves in the inner ear via vibration of the ossicles

Question 4

which ossicle articulates with the fenestra vestibuli?

Answer 4

stapes

Question 5

what ossicle acts as a bridge?

Answer 5

incus

Question 6

which ossicle is attached to the tympanic membrane?

Answer 6

maleus

Question 7

what muscle tenses the tympanic membrane to decrease the sound produced by chewing? innervation?

Answer 7

tensor tympani m.; V3

Question 8

what muscle pulls the stapes away from the fenestra vestibuli for protection during loud noises? innervation?

Answer 8

stapedius m.; facial n.