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19 terms

Chapter 12 - Section 12.3 - Sense Organs

Tough, white outer layer of the eye
choroid coat
middle layer of the eye; contains blood vessels
The light sensitive layer of the eye which is composed of receptors (rods and cones).
aqueous humor
anterior cavity of the eye filled with clear, watery fluid
vitreous humor
the clear colorless transparent jelly that fills the posterior chamber of the eyeball
a condition in which nearby objects are seen more clearly than distant objects
condition in which vision for distant objects is better than for near objects
rod-shaped receptor in the retina of the eye that is sensitive to dim light but not color
Receptor cells in the retina that are sensitive to bright light and produce color vision.
visible part of the outer ear. It collects sound and directs it into the auditory canal
the membrane that seperates the outer ear from the middle ear and that vibrates when sound waves strike it (tympanic membrane)
the bone attached to the eardrum
the bone between the hammer and the stirrup
a tiny U shaped bone that passes vibrations from the anvil to the cochlea
oval window
membrane that covers opening between middle ear and inner ear
a coiled tube that is found in the inner ear and that is essential to hearing
semicircular canal
3 loops of fluid filled tubes that that are attached to to the cochlea; maintains equilibrium
olfactory cells
sensitive nerve cells in nasal passages.
eustachian tubes
tube connecting ear to throat; helps to equalize pressure