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What is the portion of the hair that projects above the epidermis called?

  1. Hair root

  2. Hair shaft

  3. Hair follicle

  4. Hair bulb

The correct answer is: Hair shaft

The portion of the hair that projects above the epidermis is called the hair shaft. This is because the hair shaft refers to the visible part of the hair above the skin's surface. Option A, the hair root, is the part of the hair below the surface of the skin. Option C, the hair follicle, is a small pocket in the skin where hair growth originates. Option D, the hair bulb, is the rounded base of the hair follicle where cells divide to form the hair shaft.