MICROANATOMY

Detailed explanation-1: -The structure of human hair is well known: the medulla is a loosely packed, disordered region near the centre of the hair surrounded by the cortex, which contains the major part of the fibre mass, mainly consisting of keratin proteins and structural lipids.

Detailed explanation-2: -The medulla, only present in thicker hair types, is the innermost layer of your hair. It consists of a soft, thin core of transparent cells and air spaces.

Detailed explanation-3: -Medulla Layer of Hair It is also called the medullary canal, pith or marrow of the hair. The medulla represents the innermost layer or core of the hair shaft. It is a central column having round cells and surrounded by the cortex layer.

Detailed explanation-4: -The outer layer of the hair, the cuticle, is usually significantly thicker than the cuticle of Negroid and Caucasian hairs, and the medulla, or central canal, is continuous and wide.