Ears
- Pinna: collects soundwaves and channels them into the ear canal, where it is amplified.
- Ear canal: the tube that transports sound from the outer ear to the eardrum
- Ear drum: vibrates when sound enters.
- Ear ossicles: receives, amplifies, and transmits sound waves from the ear drum into the fluid filler of the inner ear.
- Cochlea: spiral shaped bone responsible for transforming sound waves into electrical impulses which are sent to the brain
- Auditory nerve: connects the inner ear and the brain and carries nerve impulses concerned with hearing and balance.
- Eustachian tube: ventilation/pressure regulation. it equalises air pressure between the atmosphere and the middle ear.
- Semicircular canals: three very small nerves that sense head position and regulate balance
- Ear wax protects the ear by: Trapping and preventing dust, bacteria, and other germs and small objects from entering and damaging the ear.