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Choroid

Choroid

(Science: anatomy) middle layer of the vertebrate eye, between retina and sclera.

well vascularised and also pigmented to throw light back onto the retina (the tapetum is an irridescent layer in the choroid of some eyes). Not to be confused with the choroid plexus, a highly vascularised region of the roof of the ventricles of the vertebrate brain that secretes cerebrospinal fluid.


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Retina and fetus

There are three layers in the back of the eye: the retina, the choroid (which absorbs extra light), and the sclera. Thus, e is the choroid, and f is the sclera. Yes, your answer for the second question is correct.

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by aptitude
Mon Oct 10, 2011 3:13 am
 
Forum: General Discussion
Topic: Retina and fetus
Replies: 2
Views: 2640

Evolutions unsolved questions!

For the retina to be wired the way that Professor Richard Dawkins suggested, would require the choroid to come between the photoreceptor cells and the light, for retinal pigmented epithelial cells must be kept in intimate contact with both the choroid and photoreceptor ...

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by Squawkbox
Sat Feb 04, 2006 7:37 pm
 
Forum: Evolution
Topic: Evolutions unsolved questions!
Replies: 125
Views: 48982

Evolutions unsolved questions!

... reasons for the wiring of the human eye. For the retina to be wired the way that Professor Richard Dawkins suggested, would require the choroid to come between the photoreceptor cells and the light, for retinal pigmented epithelial cells must be kept in intimate contact with both the ...

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by Springer
Sat Feb 04, 2006 1:18 am
 
Forum: Evolution
Topic: Evolutions unsolved questions!
Replies: 125
Views: 48982


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