Create an account
The vascular tunic (posterior choroid, anterior ciliary body and iris) are collectively called:
The Uveal Tract
blood vessels for the eyeball
contains large anounts of pigment (preventing internal reflection of light)
Ciliary body muscles serve to:
change the sape of the lens
allowing changes in focal distance of the eye
Cones are most densly concentrated in:
the central fovea ( a small depression in the center of the macula lutea)
The optic disk is a blind spot because:
it does not contain photoreceptors and light focused on it cannot be detected.
The aqueous humor maintains:
maintains the shape of the eyeball
The vitreous humor is a:
jellylike substance that fills the posterior chamber of the eye and maintains the spherical shape of the eyeball
The vitreous humor and the adequous humor are:
transparent allowing light to pass through the eye to the retina.
The lens is:
a transparent biconvex crystaline body enclosed in an elastic capsule held by supensory ligiaments
Please allow access to your computer’s microphone to use Voice Recording.
Having trouble? Click here for help.
We can’t access your microphone!
Click the icon above to update your browser permissions and try again
Reload the page to try again!Reload
Press Cmd-0 to reset your zoom
Press Ctrl-0 to reset your zoom
It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.
Please upgrade Flash or install Chrome
to use Voice Recording.
For more help, see our troubleshooting page.
Your microphone is muted
For help fixing this issue, see this FAQ.
Star this term
You can study starred terms together