Chapter 25 (EARS) - Histoworld

Question 1

What is within the membranous labyrinth?

a. Lymph
b. Blood
c. Endolymph
d. Perilymph
e. Air

Answer 1

c. Endolymph

Question 2

What is within the bony labyrinth?

a. Lymph
b. Blood
c. Endolymph
d. Perilymph
e. Air

Answer 2

d. Perilymph

* The membranous labyrinth contains endolymph. The bony labyrinth contains perilymph.

Question 3

Which contains endolymph?

a. Scala vestibuli
b. Scala tympani
c. Cochlear duct
d. Both a and b
e. All a, b, and c

Answer 3

c. Cochlear duct

Question 4

Which contains perilymph?

a. Scala vestibuli
b. Scala tympani
c. Cochlear duct
d. Both a and b
e. All a, b, and c

.

Answer 4

d. Both a and b

* The scala vestibuli and scala tympani contain perilymph. The cochlear duct contains endolymph

Question 5

Where are the sensory receptors for hearing?

a. Saccule
b. Utricle
c. Organ of Corti
d. Semicircular canals
e. Both a and b

Answer 5

c. Organ of Corti

Question 6

Where are the sensory receptors for movement?

a. Saccule
b. Utricle
c. Organ of Corti
d. Semicircular canals
e. Both a and b

Answer 6

d. Semicircular canals

Question 7

Where are the sensory receptors for position?

a. Saccule
b. Utricle
c. Organ of Corti
d. Semicircular canals
e. Both a and b

Answer 7

e. Both a and b
* The receptors for hearing are located within the organ of Corti. The receptors for movement are located within the semicircular canals. The receptors for position are located within the utricle and saccule.

Question 8

What structure is shaped like a snail shell?

a. Saccule
b. Utricle
c. Organ of Corti
d. Semicircular canals
e. Cochlea

Answer 8

e. Cochlea

Question 9

Where is the organ of Corti?

a. Saccule
b. Utricle
c. Crista ampullaris
d. Semicircular canals
e. Cochlea

Answer 9

e. Cochlea

* The cochlea is a spiral shaped structure. Within the cochlea is the organ of Corti.

Question 10

What sensation does the crista ampullaris recognize?

a. Sound
b. Position
c. Movement
d. Vibration
e. All of the above

Answer 10

c. Movement

* The crista ampullaris is the receptor for movement.

Question 11

Which cell type is the receptor cell within the organ of Corti?

a. Cells of Hensen
b. Hair cells
c. Inner border cells
d. Outer phalangeal cells
e. Inner pillar cells

Answer 11

b. Hair cells

* The hair cells are the receptor cells. The other cells are supporting cells.