Vitamin D3 Formed Within the Skin Has All of These

question 68

Multiple Choice

Vitamin D3 formed within the skin has all of these effects on other organ systems, except that it

• A) is essential for bone maintenance and growth of the skeletal system.
• B) functions as a precursor for the hormone calcitriol in the endocrine system.
• C) is essential for muscle contractions of the muscular system.
• D) functions in the activation of innominate cells by the lymphoid system.
• E) is essential for absorption of calcium and phosphorus by the digestive system.

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Definitions:

Annual Contract Rate

The interest rate agreed upon in a contract for a year-long period.

Carrying Value

Also known as book value, it is the value of an asset or liability according to a company's financial statements.

Par Value

The nominal or face value of a bond, share of stock, or other security, as stated by the issuer.

Premium

An amount paid periodically to the insurer by the insured for covering their risk or the amount by which a bond or stock sells above its face value.