Hair texture is classified based on the thickness or diameter of each hair strand into coarse, medium, or fine. This quality is related to the physiological structure of the hair, mainly keratin-filled cells within the hair shaft.
The answer to the student's question, 'Hair ______ is based on the thickness or diameter of each hair strand, usually classified as coarse, medium, and fine.' is C) Texture. Hair texture refers to the quality of a hair strand that can be determined by thickness or diameter of each hair strand. Hair texture is typically classified into three categories: coarse, medium, and fine. Each hair grows out of a follicle in the dermis and its main component is keratin. The hair shaft consists of dead, keratin-filled cells and is divided into three zones: the cuticle, cortex, and medulla. Aspects such as curl pattern, thickness, and consistency contribute to the hair's overall texture.