outer ear parts yeah

Question 1

temporal bone

Answer 1

located on either side of the skull and contains organs for hearing and balance

Question 2

Squamous

Answer 2

part of temporal bone, zygomatic process

Question 3

tympanic

Answer 3

part of temporal bone, external auditory meatus and styloid process for muscle attachment

Question 4

mastoid

Answer 4

part of temporal bone, mastoid process

Question 5

petrous

Answer 5

part of temporal bone, (only visible underneath), middle ear, internal auditory meatus

Question 6

Pinna (aka auricle)

Answer 6

visible classic ear, composed entirely of cartilage and skin (except for lobule ear lobe with no cartilage)

Question 7

external auditory meatus

Answer 7

ear canal, extends from pinna to tympanic membrane, protects ear drums
The outer 1/3 is cartilaginous, whereas the inner 2/3s in boney

Question 8

embryonic external ear

Answer 8

5 to 8 weeks shows development of the auricular hillocks that will eventually form the outer ear

Question 9

external auditory meatus cartilaginous

Answer 9

contains hair (cilia) and sebaceous gland which produces cerum (ear wax)

Question 10

primary functions of outer ear

Answer 10

collect and amplification of sound, localization, resonation, protect middle and inner ear from damage, cosmetic, erogenous (lobule sensitive to stimulation)

Question 11

head related transfer function

Answer 11

outer ear resonance, individual specific yet plastic,
The net effect of the head, pinna, and ear canal is that sounds in the 2,000 to 4,000 Hz region are amplified by 10 to 15 dB.
noise in this range most hazerdous to hearing

Question 12

tympanic membrane

Answer 12

ear drum, oval thin transparent membrane that seperates the external and middle ear

Question 13

tympanic membrane is divided into 2 parts

Answer 13

pars flaccida (upper) and pars tensa (lower)

Question 14

3 layers of pars tensa (in tympanic membrane)

Answer 14

1. skin (outside)
2. fibrous tissue
3. mucosa (inside)