Lecture7: Microstructure Of Hearing

Question 1

What is the top part of the chochlear canal?

Answer 1

Scala vestibuli

Question 2

What is the middle part of the chochlear canal?

Answer 2

The scala media

Question 3

What is the bottom part of the chochlear canal?

Answer 3

Scala Tympani

Question 4

How do the scala tympani and vestibuli communicate?

Answer 4

Through the Helicotrema

Question 5

What do inner and outer hair cells act as?

Answer 5

Mechanoreceptors

Question 6

What is the inner hair cell shape, arrangement, and stereocilia shape

Answer 6

Flask shaped, arranged as one row, and V shaped stereocilia

Question 7

What is the outer hair cell shape, arrangement, and stereocilia shape

Answer 7

Tall cylinderical, 3-5 rows, W shaped stereocilia

Question 8

What innervates inner hair cells?

Answer 8

Type 1 neurons,”Large”

Question 9

What innervates outer hair cells?

Answer 9

Type 2 neurons,”Small”

Question 10

What is the role of the basillar membrane in sound wave transmission?

Answer 10

A rocking motion that deflects the stereocilia to stimulate neurotransmitter release