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Sclera

Sclera

(Science: anatomy) The tough white outer coat of the eyeball, covering approximately the posterior five sixths of its surface and continuous anteriorly with the cornea and posteriorly with the external sheath of the optic nerve. Composed mainly of type i collagen arranged in bundles and proteoglycans.

Origin: L., gr. Skleros = hard


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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: 2826

Re: Subspecies comparison of the Genus: Corucia

... (>7 vs. 5-6 for zebrata). So the type you have been calling alfredschmidti (which are significantly *larger* than zebrata, and have black sclera) are NOT alfredschmidti as described by Köhler (1997). It is possible that this larger type is a third distinct subspecies. But I don't know ...

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by Celeste
Thu Dec 18, 2008 8:39 am
 
Forum: Evolution
Topic: Subspecies comparison of the Genus: Corucia
Replies: 1
Views: 9286

simple diffusion and skin cells

... cells do permit gas diffusion to a point. This is why painting someone's body entirely in paint is a really bad idea. As for the eye, well the sclera is a thick layer of protein (isnt it?) so its not cells that are obstructing gas.

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by kotoreru
Sun May 13, 2007 9:18 pm
 
Forum: Physiology
Topic: simple diffusion and skin cells
Replies: 5
Views: 7541

Sclera in the eyes (the white bit?)

Google surely is a good source...i think your questions would take only a minute to get their answers via google! But sclera is made of collagen and elastic fibers...the rest help yourself !

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by Amrik
Sun Jan 07, 2007 4:11 pm
 
Forum: Human Biology
Topic: Sclera in the eyes (the white bit?)
Replies: 1
Views: 1131

Sclera in the eyes (the white bit?)

This is partially related to human physiology, and partially not. My questions are: What is the main substance that makes up the sclera? Are there any other animals with visible sclera? Thanks :) Matt Kneale

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by CycloneNimrod
Sun Jan 07, 2007 2:39 pm
 
Forum: Human Biology
Topic: Sclera in the eyes (the white bit?)
Replies: 1
Views: 1131
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