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What is The medullary index of a human hair is and explain in detail?
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