Anatomy and physiology-control and coordination-concept 2: sense-vocab section

vocab flashcards made by Anthony Hernandez

sclera

white part of the eye

cornea

the transparent, dome-shaped outer layer of the eye. located in the front of the eye. covers pupil and iris

choroid

located between the retina and the sclera. rich in oxygen and nutrients because of the blood vessels it carries.

ciliary body

makes aqueous fluid and changes the shape of the lens while eye is focusing. located between cornea and iris

iris

ring of smooth muscle between cornea and lens that contracts and expands the size of the pupil. iris controls the amount of light the eye takes in

pupil

allows light into the eye

suspensor ligament

halo of fibers encircling and holding up the lens

retina

inner layer .

TWO LAYERS:

• outer pigmented layer= pigment cells that help absorb light, so it doesn’t scatter

• inner neural layer= has tons of neurons and neuroglia which help create pathways for light

optic nerve

Millions of photoreceptors that convert light energy to AP travels through the optic nerve to the thalamus and visual cortex of the brain.

fovea centralis

gives us our sharpest and clearest vision

optic disc

where the optic nerve exits the eye

rods

register black and white

cones

detect fine detail and color

lens

the convex transparent disc that focuses the light that is allowed in and projects it onto the retina in the inner layer

vitreous humor

the clear gel that fills the posterior area of the eye that is behind the lens

aqueous humor

clear fluid that fills the anterior section that is in front of the lens

odor

the gaseous molecules we smell

olfactory epithelium

where molecules make contract with the roof of the nasal cavity which has olfactory sensory neurons. nose hairs filter out some of the molecules

taste buds

the sensory organ of taste

papillae

bumps on your tongue, also where taste buds are located inside

gustatory epithelial cells

taste receptor cells

basal epithelial cells

stem cells that make new gustatory epithelial cells