Ear

Question 1

external ear

Answer 1

Simple apparatus for collection of sound waves

Auricle - pinna
External auditory canal
Tympanic membrane

Question 2

Middle ear

Answer 2

located in the temporal bone and houses the auditory ossicles

Internals of the eardrum and external to oval window inner ear

six sided box
-Lateral or membranous wall
-Roof or tegmental wall
-Floor or jugular wall
-medial or labyrintheric wall
-anterior or carotid wall
-Posterior or mastoid wall

Question 3

Auditory ossicles

Answer 3

Malleus (hammer)
incus (anvil)
stapes (stirrup)

transmit sounds from the air to the fluid filled labyrinth (cochlea)

Absence of the auditory ossicles would constitute a moderate to severe hearing loss