The Most Active Form of Vitamin D, 1, 25-Dihydroxycholecalciferol, Is

question 4

Multiple Choice

The most active form of vitamin D, 1, 25-dihydroxycholecalciferol, is synthesized from its precursor,25 -hydroxycholecalciferol, in

• A) the kidney.
• B) the liver.
• C) the skin.
• D) the intestinal mucosa.
• E) plants. It must be supplied to humans in the diet.

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Definitions:

Voluntary Muscles

Muscles that can be consciously controlled by the brain to produce movements.

Deep Sleep

A stage of sleep characterized by slow brain waves, known for its role in restorative sleep.

Dream

A series of thoughts, images, and sensations occurring in a person's mind during sleep.

Unconscious

The part of the mind that is inaccessible to the conscious mind but affects behavior and emotions.