Question

The major regions of a hair shaft include all of the following except ________.

Answer 1

Answer:

The medulla – the deepest layer of the hair shaft, only seen in large and thick hairs.

The cortex – the middle layer of the hair shaft which provides the strength, color and texture of a hair fiber.

The cuticle – the outer layer of the hair shaft is thin and colorless

Explanation:

Select the answer choice that is not one of those three above