Final answer:
The technique known as backcombing or teasing involves combing hair towards the scalp to create volume; it's unrelated to the hair matrix, which contains a layer of basal cells responsible for new hair growth.
Step-by-step explanation:
The practice of combing small sections of hair from the ends toward the scalp to create a cushioned base is known as backcombing. This technique also goes by the term teasing, which involves the same process and results in volume at the hair's base. However, backcombing should be done carefully to prevent damage to the hair. It is not to be confused with layering or slicing, which are cutting techniques, nor the hair matrix components, which include things like the hair follicle and layer of basal cells.
When addressing the hair matrix and what it contains, the correct answer is it comprises a layer of basal cells. These cells are responsible for the generation of new hair and are located at the base of the hair follicle, underneath the scalp's surface. Neither the hair follicle itself nor the hair shaft or the glassy membrane are components of the hair matrix.