Histology of the Senses

Question 0

Location of spiral ganglion in cochlea

Answer 0

Modiolus

Question 1

Eustachian tube epithelium

Answer 1

Pseudostratified columnar

Question 2

Three chambers of cochlea

Answer 2

1. Scala vestibuli
2. Scala tympani
   - Both contain perilymph
3. Scala media
   - Contains endolymph and the organ of corti

Question 3

Cupula

Answer 3

Covers the crista ampularis; movement reflects stereocilia of hair cells detecting

Question 4

Otolithic membane

Answer 4

Covers the macula of saccule and the utricle; movement reflects hair cells

Question 5

Types of tastebuds

Answer 5

Filliform- no taste sensors

Fungiform- anterior 2/3; bud at apical surface

Circumvallate- posterior tongue; deep furrows

Foliate- sides of posterior tongue

Question 6

Olfactory cells

Answer 6

Are bipolar neurons

Question 7

Fluid in osseus labyrinth

Answer 7

Perilymph

Question 8

Fluid in membranous labyrinth

Answer 8

Endolymph

Question 9

Blood supply for the scala media

Answer 9

Stria vascularis - found on lateral wall

Question 10

Location of olfactory epithelium

Answer 10

Superior conchae