The outer surface of the hair is called the
A)medulla.
B)shaft.
C)hair bulb.
D)cuticle.
E)root.

Question

Quizplus · Accepted Answer

The cuticle is the outermost layer of the hair shaft, consisting of overlapping cells that help protect the hair and prevent damage. The medulla is the innermost layer of the hair shaft, while the shaft is the entire length of the hair fiber. The hair bulb is the base of the hair follicle where new hair cells are formed, and the root is the portion of the hair below the skin surface that anchors it in place.

The Outer Surface of the Hair Is Called the