NEET PG DENTAL EXAM

Detailed explanation-1: -Hair color is determined by the amount of a pigment called melanin in hair. An abundance of one type of melanin, called eumelanin, gives people black or brown hair. An abundance of another pigment, called pheomelanin, gives people red hair.

Detailed explanation-2: -Melanocytes make two forms of melanin, eumelanin and pheomelanin. The relative amounts of these two pigments help determine the color of a person’s hair and skin. People who produce mostly eumelanin tend to have brown or black hair and dark skin that tans easily.

Detailed explanation-3: -Melanin content of skin is the main determining factor of skin and hair colour; hair is considered a form of skin with regards to pigmentation. Melanin is synthesized by melanosomes found in skin cells called melanocytes.

Detailed explanation-4: -Melanogenically active melanocytes are restricted to the upper hair matrix of the anagen hair follicle, below the pre-cortical keratinocyte population, correlating with the anagen transfer of melanin predominantly to the hair shaft cortex, less to the medulla, and, only rarely to the hair cuticle.