NEET PG DENTAL EXAM

Detailed explanation-1: -The matrix is the part of the hair follicle where matrix keratinocytes proliferate to form the hair shaft of growing hair. Melanocytes are mixed amongst the matrix cells to provide the hair shaft with color.

Detailed explanation-2: -The shaft is the visible part of the hair that sticks out of the skin. The hair root is in the skin and extends down to the deeper layers of the skin. It is surrounded by the hair follicle (a sheath of skin and connective tissue), which is also connected to a sebaceous gland.

Detailed explanation-3: -Each hair shaft is made up of two or three layers: the cuticle, the cortex, and sometimes the medulla. The cuticle is the outermost layer. Made of flattened cells that overlap like the tiles on a terra-cotta roof, the cuticle protects the inside of the hair shaft from damage.

Detailed explanation-4: -Sebaceous glands are located in the mid-dermis and almost always develop alongside a hair follicle, with an outlet emptying into the follicular canal. This association is known as the pilosebaceous unit.