Physiology lesson 6 Vestibular

Question 1

What is frequency?

Answer 1

of waves that pass at a given point in time

Question 2

What is pitch?

Answer 2

Perception of different sound frequencies.

Question 3

What pathway is taken at high frequency

Answer 3

Basilar membrane path

Question 4

What pathway is taken at a very low frequency (below 20HZ)

Answer 4

Helicotrema path/ Dosent go through choclear duct and dosent ascende to cortex therefore cant detect it

Question 5

What makes up the external ear?

Answer 5

auricle (pinna) , the external acoustic meatus, and eardrum.

Question 6

what is the name of the sebaceous glands covering the external acoustic meatus?

Answer 6

ceruminous glands

Question 7

Name the 2 opennings in the ear and their function

Answer 7

oval window which connects the middle ear to internal ear and round window which neutralises pressure

Question 8

The what runs downwards to link middle ear cavity with nasopharynx.

Answer 8

pharyngotympanic tube

Question 9

Name the 3 ossicle bones from smallest to biggest.

Answer 9

malleus, incus, stapes

Question 10

Muscles of the ear include?

Answer 10

tensor tympani inserts on malleus
and
stapedius

Question 11

name 2 divisions of inner ear

Answer 11

Bony labyrinth : filled with a fluid called perilymph
Membranous labyrinth: filled with endolymph

Question 12

What is purpose of perilymph and endolymph

Answer 12

help in sound vibrations and mechanical forces during changes in body position and acceleration.

Question 13

what 3 parts is bony labyrinth made of

Answer 13

Vestibule
ii) Semicircular canals
iii) Cochlea