Histology of the Ear

Question 1

statoacoustic ganglion cells help form

Answer 1

otic placode

Question 2

what forms the vestibulococlear ganglion

Answer 2

neural crest cells

Question 3

sacuule forms the

Answer 3

cochlear duct

Question 4

utricile develops the

Answer 4

three semicircular canals

Question 5

_________is continuous with the perilymphatic duct

Answer 5

subarachnoid space

Question 6

function of the spiral ligament

Answer 6

tethers the cochlear duct to the surrounding cartilage

Question 7

elastic cartilage, keratinized stratified squamous epithelium containing hairs and sebaceous glands

Answer 7

auricle

Question 8

outer 1/3 is elastic cartilage

Answer 8

EAM

Question 9

ceruminous glands can be found in

Answer 9

EAM

Question 10

what are the three layers of the tympaic membrane

Answer 10

cuticular, fibrous and mucous

Question 11

the _____is from ectoderm and is continous with epithelium of the meatus

Answer 11

cuticular layer

Question 12

the ________is from mesoderm and contains collagen, elastic and unique fibers

Answer 12

fibrous layer

Question 13

the ______is from endoderm and is continous with epithelium of tympanic cavity and over the membrane is ONLY single layer of cells and is continous with the middle ear mucosa

Answer 13

mucous layer

Question 14

what are the two types of vestibular hair cells

Answer 14

cristae ampularris and macula

Question 15

auditory hair cells

Answer 15

organ of corti