Baisc Ear Anatomy Worksheet

1. Sketch a picture of an ear and label the following: (above)

Inner ear
middle ear
outer ear
pinna
tympanic membrane
cochlea
stapes
malleus
incus
2. What is the function of the following:
Pinna- cartilage flap that conveys sounds waves into the ear.
tympanic membrane - converts sounds waves into sound vibrations.
ossicles - three small bones which magnify sound vibrations
cochlea - contains fluid and changes sound vibrations into nerve impules.
semicircular canals - sends impulses to the brain to let it know your body is off balance.
3. What three bones make up the ossicles? - incus -stapes - malleus
4. What is the function of hairs in the ear? stimulate nerve impulses to be sent to the brain by way of the auditory nerve.