Form
The visible part of the ear, made of cartilage and flesh
The pinna
*diagram of the ear* This channel of bone is where you'll find most of your earwax
Auditory canal
It sends electrical signals through the body--the ocular and auditory ones are good examples
Nerve
These cells of the eye are connected to the optic nerve
Rods and cones
Colorblindness is a defect in one of these cells
cones
This is the outermost part of the eye--it's a very punny name
Cornea
*Diagram of the ear* This membrane separates the middle ear from the outer ear
Tympanic membrane/eardrum
opsin
These two structures focus light in the eye
Cornea and lens
You have about 100 million of these in each eye
Rods
This is a panel of photosensitive tissue--cells that sense light
Retina
*Diagram of the eye* This hole is where light gets through the iris, or a name for a student
Pupil
Its hair cells pick up fluid vibrations inside
cochlea
Rods and cones in the retina face this way; it lets them be very close to nourishing arteries
Backwards
The amplitude of a sound wave is related to this perceived quality
One of the smallest bones in your body, it's the middle of a three-part lever
Incus
*Diagram of the eye* It's double convex
Lens
It triggers a signal which you perceive as hearing
Hair cell
This structure is analogous to the opsin of the retina
hair/stereocelia
Frequency is a property of sound waves which we perceive as pitch; it measures this
how many waves per second
This small circular muscle is both a gatekeeper and a piece of art
Iris
*Diagram of the ear* If you're looking for the locus of balance, this is it.
Semicircular Canals
Fluid-filled chamber that connects the cochlea to the semicircular canals
vestibule
This preposition describes many relationships, including the spatial relationship of opsins and the rods and cones to which they belong
Inside
three