Vitamin a Supplements Are Needed by

question 160

Multiple Choice

Vitamin A supplements are needed by

• A) pregnant women.
• B) people with severe fat malabsorption.
• C) anyone trying to fend off a winter cold.
• D) All of these choices are correct.

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Definitions:

Target Cells

Cells that are affected by specific hormones, drugs, or other substances, having receptors that bind these molecules.

Thyroxine

A substance generated by the thyroid gland that controls metabolism, the production of energy, and the processes of growth and development.

Posterior Pituitary

A part of the pituitary gland that releases hormones like antidiuretic hormone (ADH) and oxytocin into the bloodstream.

Neurohormones

Neurohormones are hormones produced and released by neuroendocrine cells into the blood to affect distant cells, acting as messengers in the body.