What is the primary responsibility of the matrix in the hair follicle?

The matrix in the hair follicle plays a crucial role in hair growth and development. It is composed of a group of rapidly dividing cells located at the base of the hair follicle. These cells undergo mitosis, which leads to the production of new hair cells. As these newly formed cells push older cells upward, they undergo a process of keratinization, eventually forming the hair shaft that extends above the skin's surface.

This important function of producing new hair is critical to the cycle of hair replacement and growth, which allows for the regeneration of hair follicles throughout an individual's life. Understanding this primary role helps highlight the matrix's significance in maintaining healthy hair and the overall functioning of the integumentary system.