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Eye and the Endocrine System (Structure and Function of the eye…
Eye and the Endocrine System
Structure and Function of the eye
70 % of all sense receptors in body
Detects and responds to
electromagnetic radiation
Scerla- fibrous “white” part of eye
Choroid-dark pigment layer
Cornea-transparent covering
Pupil-opening that lets light into eye
Lens-focuses light rays on fovea
Aqueous humor- – water fluid
behind cornea
Vitreous humor- jelly like
fluid maintains eyeball shape
Retina-layer of sensory
receptor cells
Fovea- small depression with
high concentration of cones
Conjuctivia-
mucous
membrane covering the front
surface of the sclera and lining
the eyelid
Disease associated with the eye
Cataracts- Clouding of the lens that causes the world to appear distorted
as if seen through frosted glass
Glaucoma-If the drainage of aqueous humor is blocked, fluid backs up as in
a clogged sink
Astigmatism-Unequal curvatures in different parts of the cornea or lens leads
to blurry images
Hyperia-Individuals can see distant objects well but close objects
appear blurry
Myopia-Distant objects are focused in front of the retina rather than on
it
Color Blindness-Congenital lack of one or more cone type leads to partial
color blindness
Conjuctivitis-
inflammation of the
conjunctiva usually from
bacteria or viral infection
Major functions of the Endocrine System
made up of the cells, tissues, and organs that secrete
hormones into body fluids.
Communicate with hormones
in charge of target cells and bloodstream
regulate activity of cells
processes sexual development
Disease of endocrine system
Tapetum-
iridescent film under
the retina that provides animals with
“night vision”
Names of hormone
testosterone
growth
progester
insulin
adrenalin