What Substance Is Produced by the Skin and Is Necessary

question 6

Multiple Choice

What substance is produced by the skin and is necessary for the absorption of calcium from the digestive tract?

• A) keratin
• B) vitamin D
• C) carotene
• D) collagen

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Definitions:

Scleroderma

A chronic autoimmune disease characterized by hardening and tightening of the skin and connective tissues.

Trichotillomania

A psychological condition involving an irresistible urge to pull out one's hair, leading to noticeable hair loss.

Tinea Capitis

A fungal infection of the scalp, commonly known as ringworm, that can cause hair loss and scalp scaly patches.

Folliculitis

An inflammation of the hair follicles, often resulting in red, swollen, and sometimes painful bumps on the skin.