It is normal for breasts to shrink after lactation ceases. This is a consequence of __________ in human breast cells.

A. necrosis
B. apoptosis
C. atrophy
D. infarction
E. gangrene


B. apoptosis

Anatomy & Physiology

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A hormone whose production is associated with seasonal fluctuations in day length is ________.

Fill in the blank(s) with the appropriate word(s).

Anatomy & Physiology

Myelin forming cells in the peripheral nervous system are called ____________________ cells

Fill in the blank(s) with correct word

Anatomy & Physiology

________ are the simplest body structures considered alive

A) Organelles B) Organs C) Cells D) Organ systems E) Molecules

Anatomy & Physiology

In order for T4 to be produced, the diet must contain sufficient amounts of:

a. calcium b. iodine c. iron d. sulfur

Anatomy & Physiology