CSD 155 LAB 11: Anatomy of the Ear

Question 1

outer ear

Answer 1

visible part of the ear until the tympanic membrane

Question 2

middle ear

Answer 2

includes tympanic membrane until cochlea

Question 3

inner ear

Answer 3

includes cochlea & its related structures

Question 4

pinna/auricle

Answer 4

prominence known as the ear, structure is provided by cartilaginous framework

Question 5

helix

Answer 5

forms the curled margin (edge) of the pinna, distal borders

Question 6

crus of the helix

Answer 6

anterior ridge of pinna that protrudes to the concha

Question 7

antihelix

Answer 7

immediately anterior to the helix, marks the entrance to the concha

Question 8

concha

Answer 8

bowl-shaped entrance to ear canal

Question 9

tragus

Answer 9

flap of epithelium-covered cartilage that looks like it could cover the external auditory meatus

Question 10

antitragus

Answer 10

posterior and inferior to the tragus

Question 11

lobule

Answer 11

inferior to the tragus, commonly known as the earlobe, devoid of cartilage

Question 12

function of the pinna

Answer 12

• serves as a collector of sounds to be process

- aids in sound localization (determining the direction of sound is coming from)