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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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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: 2123

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: 2750

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: 495

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: 495

Subspecies comparison of the Genus: Corucia

... and Corucia zebrata alfredschmidti (underlined), are described including new material not previously documented. Key words: Corucia, Sclera, Parietal, Prefrontal, Rostral, Nasal Introduction: Corucia zebrata zebrata (underlined) described and named (Gray, 1855) and Corucia zebrata ...

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by Brian - LCRC
Sat Aug 26, 2006 1:15 pm
 
Forum: Evolution
Topic: Subspecies comparison of the Genus: Corucia
Replies: 1
Views: 2123
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