The ratio of most animals is ½ and the ratio for humans is 1/3. Medulla patterns are also important, there are 3 types continuous, interrupted, and fragmented. The continuous pattern is found in human pubic hair, animal hairs and mongoloid race hairs. The interrupted pattern is found in animal hairs. The fragmented pattern is found in human head hair except for the mongoloid race. Human hair can have an absent medulla. Then, it is important to analyze the medulla shapes which range from cylindrical, which is seen in human hair, to a string of pearls. Compared to animal hair, a human hair is fine and thin and has pigment that is evenly
The ratio of most animals is ½ and the ratio for humans is 1/3. Medulla patterns are also important, there are 3 types continuous, interrupted, and fragmented. The continuous pattern is found in human pubic hair, animal hairs and mongoloid race hairs. The interrupted pattern is found in animal hairs. The fragmented pattern is found in human head hair except for the mongoloid race. Human hair can have an absent medulla. Then, it is important to analyze the medulla shapes which range from cylindrical, which is seen in human hair, to a string of pearls. Compared to animal hair, a human hair is fine and thin and has pigment that is evenly