Name the layer from which fingernails and toenails are derived.

A. Dermis
B. Subcutaneous tissue
C. Epidermis


Answer: C

Anatomy & Physiology

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Arteries can constrict or dilate as needed because of the smooth muscle found in the

A. tunica intima. B. tunica media. C. tunica adventitia. D. tunica externa. E. tunica interna.

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Glaucoma can result from

A. damage to the suspensory ligament. B. inhibition of the circulation of aqueous humor. C. opacity of the lens. D. a decrease in the number of cones. E. increased amounts of vitreous humor.

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Why must a normal body temperature be maintained in order for chemical reactions to be continued at life-sustaining rates?

What will be an ideal response?

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Four secretory organs that open lateroventrally near the carapace edge of turtles are the ___________________

Fill in the blank(s) with correct word

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