THE EAR

Question 1

Pinna

Answer 1

External ear flaps that collect sound

Question 2

External auditory canal

Answer 2

•passageway from outer ear to inner ear

Tympanic membrane

Question 3

Ear drum/Tympamic membrane

Answer 3

• separates external ear from middle ear

* transmits sound into the ossicles/middle ear

Question 4

Ossicles

Answer 4

Malleus/incus/stapes

•tiny bones between eardrum and oval window

Question 5

Cochlea

Answer 5

• rows of specialized hair cells

* determined/responds to sound waves and converts them to nerve impulses

Question 6

Auditory nerve

Answer 6

Transfers auditory info from inner ear to brain

Question 7

Semicircular canals

Answer 7

• shifting of fluids in canals helps body determine movement
• acts as a motion sensor

Question 8

Eustachian tube

Answer 8

• extends from ear/mouth/nose
• air filled tube that equalizes pressure in inner/external ear
• drains out secretions/infection/debris

Question 9

Vestibule

Answer 9

• responds to changes of head position/movement

* regulates balance

Question 10

Oval window

Answer 10

• collects sound transmissions from ear drum and ossicles

* carries sound transmissions into inner ear