Contraction of the diaphragm results in ________.

A. expiration
B. urination
C. a flat stomach ("sucking in your gut")
D. inspiration


Answer: D

Anatomy & Physiology

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What is the role of calcium in muscle contraction?

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After activation of C3 of the complement system, which of these is a role of its component part, C3b? 

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When is the thymus most active?

A) during old age B) during middle age C) throughout life D) during infancy and youth E) from puberty to adulthood

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Which of the following regional terms refers to the back of the knee?

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