The medullary index of a human hair is: (A) 0.2, (B) 0.4, (C) 0.5, (D) 0.6
Answer is A. Human hair Animal hair Fine thin Coarse & thick Cuticular scales are sho, not continuous Cuticular scales are large, step like projections Coex thick (4-10 times as broad as medulla) Coex thin Pigment more towards the periphery Pigment more towards the medulla Medulla thin & fragmented, sometimes absent Medulla broad, continuous & always present. Medullary index <0.3 Medullary index > 0.5 Precipitin test specific for human Precipitin test specific for animal