Pennsylvania Barber Licensure Practice Exam

Hair receives its nourishment from the hair papilla, which is a structure located at the base of the hair follicle. Inside the hair papilla, there are a network of tiny blood vessels called capillaries. These capillaries supply blood and nutrients to the cells in the hair follicle and papilla, which in turn provide nourishment to the hair shaft. This is why the other options are incorrect because muscles, glands, and fatty tissues do not have the capability to supply nourishment to the hair. While muscles and fatty tissues are found in the skin, they do not directly support hair growth and nourishment. Glands, on the other hand, secrete oil to keep the hair and scalp moisturized, but they do not play a role in providing nutrients to the hair.