Lines of cleavage are a result of

A. the alignment of epidermal ridges.
B. wounds to the epidermis such as hemangiomas.
C. the orientation of collagen fibers in the dermis.
D. the alignment of dermal papillae.


Answer: C

Anatomy & Physiology

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As with humans, other primates need play time to help develop normally. This is because play __________.

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During the preparatory phase for an underhand softball pitch, the hand holding the ball is drawn behind the body prior to the forward swing of the arm. When the hand is drawn behind the body, which of the following movements occurs at the shoulder?

A. flexion B. extension C. hyperextension D. circumduction

Anatomy & Physiology