the senses Flashcards
sense and organ
touch-skin
taste-tongue
smell-nasal cavity
sight-eye
conjuntivia
the membrane around the eye and protects sclera
sclera
tough white coat that holds the eye in shape
choroid
nourishes the eye and has melanin to absorb light
retina
contains rods and cones ,light receptors and is light sensitive
fovea
region of sharpest focus has cones only
blind spot
where optic nerve leaves retina, not sensitive to light and has no rods or cones
lens
changes shape to focus light on the retina
ciliary muscle
causes lens to change shape
iris
controls the amount of light entering the eye. the colored part of the eye
pupil
let’s light into the eye-opening in the iris
aqueous humor
holds front of the eye in shape
vitreous humor
supports the eye
optic nerve
carries impulses to the brain
cones
cells in the retina that see colour