The Immunoglobulin Class That Is the Only One Capable of Crossing

question 77

Multiple Choice

The immunoglobulin class that is the only one capable of crossing the placenta is ______.

• A) IgE
• B) IgG
• C) IgM
• D) IgD
• E) IgA

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Definitions:

Hypothalamus

A region of the diencephalon. It maintains homeostasis by regulating many vital activities such as heart rate, blood pressure, and breathing rate.

Lactogenic Hormone

A hormone, also known as prolactin, that stimulates milk production in mammals.

Mammary Glands

Accessory organs of the female reproductive system that secrete milk after pregnancy.

Second Messenger

Intracellular signaling molecules released by the cell in response to exposure to extracellular signaling molecules.