The innermost, soft core of the hair shaft is the __________.

A. medulla
B. cortex
C. cuticle
D. soft keratin
E. bulb


A. medulla

Anatomy & Physiology

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Identify the structure labeled "9."

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Directional terms are important in the study of anatomy. What does "D" represent?

A. median B. right C. left D. inferior E. lateral

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If the structure of a fibrous joint makes it highly stable, what is likely regarding its mobility?

A. It will have a low degree of mobility. B. It will have a high degree of mobility.

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Epithelial tissues are derivatives of the following embryonic germ layer.

A. endoderm B.ectoderm C.mesoderm D.endoderm and mesoderm E.none of the above

Anatomy & Physiology