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Which structure maintains the shape of the eye and protects the delicate inner layers of tissue?
a. conjunctiva
b. sclera
c. choroid
d. retina?

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The correct answer is b. sclera.  

 The structure of an eye can be divided into three layers where the outermost layer, called the fibrous tunic, is composed of the cornea and sclera. The sclera is a layer which contains collagen and elastic fibres with a protective function.

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