"Lactational amenorrhea" is a physiological phenomenon that parallels a common cause of infertility due to elevated levels of:

A. prolactin
B. oxytocin
C. progesterone
D. inhibin
E. dopamine


ANS: A

Anatomy & Physiology

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Which of the following is/are not part of the axial skeleton?

A. The vertebrae B. The ribs C. The sternum D. The clavicles E. The parietal bone

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The buccal, lingual, and labial salivary glands are ________ salivary glands.

A. intrinsic B. extrinsic

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Which vertebral bone does NOT have a body?

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