_______________, a Hormone Involved in the Regulation of Circadian Rhythms

question 193

Multiple Choice

_______________, a hormone involved in the regulation of circadian rhythms, is secreted by the pineal gland.

• A) Norepinephrine
• B) Testosterone
• C) Estrogen
• D) Melatonin

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Definitions:

Prenatal Development

The process of growth and development within the womb, from conception to the birth of a child.

Cleavage

The process of cell division in a developing embryo where a single fertilized cell divides into multiple, smaller cells.

Ossification

The process by which bone is formed, renewed, and repaired in the body.

Folic Acid

A B-vitamin essential for the proper development of the human body, particularly critical in preventing neural tube defects in developing fetuses.