EARS

Question 1

designed for hearing and equilibrium. It receives sound vibrations, is sensitive to the force of gravity, and reacts to the movement of the head.

Answer 1

EAR

Question 2

projection that collects and channel sounds.

Answer 2

PINNA

Question 2

Ear is divided into three major areas:


Answer 2

External ear - direct sound waves
Middle ear - direct sound waves
Inner ear - balance and hearing

Question 2

EXTERNAL EAR IS COMPOSED OF

Answer 2

auricle (pinna) and the external acoustic meatus.

Question 3

• opens the ear drum

Answer 3

Ear canal or auditory canal

Question 3

• vibrates when the sound hits it

Answer 3

Ear drum or tympanic membrane

Question 4

 - line the auditory canal and secrete a cerumen or earwax.


Answer 4

Glands

Question 5

• lubricates and protects the ear.

Answer 5

Ear wax

Question 5

Contains structures referred to as labyrinths, because they are complicated, bony shapes.

Answer 5

INNER EAR

Question 5

is receptors for hearing

Answer 5

Cochlea

Question 6

 is divided into 3 channels that run it’s entire coiled length.
These channels are filled with auditory fluids.

Answer 6

Cochlea

Question 7

There are holes in the cochlea, round and oval windows,

Answer 7

allowing sounds to enter it from the middle ear.

Question 7

are bony structures lined with membranes

Answer 7

The vestibules and semicircular canals

Question 8

Inside one of the cochlea chambers is the

Answer 8

organ of Corti.

Question 8

is filled with nerve endings that connect to the auditory nerve transmitting sounds from the inner ear to the brain.

Answer 8

Corti

Question 9

which provides a sense of equilibrium.

Question 10

vestibules and semicircular canals contains fluid called —-

Answer 10

perilymph

Question 10

Changes in the position of the head cause this fluid to move against sensory receptors, dizziness or motion sickness may be associated with rapid movements.