Ear

Question 1

Pinna

Answer 1

Collects and directs sound waves into external auditory opening

Question 2

External auditory canal

Answer 2

Transmits sound waves from the pinna to the tympanic membrane

Question 3

Tympanic membrane

Answer 3

• Thin membrane covering opening between external auditory canal and middle ear
• Converts sound waves to vibrations that are transmitted to the hammer

Question 4

Ossicles

Answer 4

• 3 ossicles form leaver system connecting outer and inner ear
• Amplifies and transmits the vibration to oval window membrane

Question 5

Oval window

Answer 5

Transmits vibration from air-filled middle ear to fluid-filled inner ear
•opening covered with thin membrane connecting middle and inner ear

Question 6

Round window

Answer 6

• opening covered with thin membrane connecting middle and inner ear
• below oval window

Question 7

Eustachian tube

Answer 7

• connects middle ear to pharynx

* ensures equal air pressure on either side if tympanic membrane

Question 8

Vestibular apparatus

Answer 8

• 2 membranous sacks and 3 semicircular canals

* helps maintain balance in the body

Question 9

Cochlea

Answer 9

Long coiled tube

Question 10

Auditory nerve

Answer 10

Nerve impulses to cerebral cortex (hearing) and cerebellum (balance)