A myelin sheath is composed primarily of ________.

A. proteins
B. lipids
C. carbohydrates
D. glycoproteins
E. polysaccharides


Answer: B

Anatomy & Physiology

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Which of the labeled cells in the diagram is a neuroglial cell that forms and maintains the myelin sheath around CNS axons?

a) A b) B c) C d) D e) F

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What is the main new piece of information about early tetrapods that contradicts the old "drying pond" hypothesis of the origins of terrestriality?

What will be an ideal response?

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Fibroblasts produce collagen during wound healing.

Answer the following statement true (T) or false (F)

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Seventy percent of all sensory receptors are located in the ________.

A) eye B) ears C) skin D) nose

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