. Biology of the vertebrates : a comparative study of man and his animal allies. Vertebrates; Vertebrates -- Anatomy; Anatomy, Comparative. 254 Biology of the Vertebrates Sexual differentiation of human hair is largely controlled by hormone action as demonstrated when sexual hormones are prevented from normal occurrence by the removal of ovaries or testes. The distribution of adult female hair over the body is intermediate between that of the embryonic or infantile condition and the arrangement in the adult male. Although man is one of the least hairy of the mammals, with the excep- tion of th
. Biology of the vertebrates : a comparative study of man and his animal allies. Vertebrates; Vertebrates -- Anatomy; Anatomy, Comparative. 254 Biology of the Vertebrates Sexual differentiation of human hair is largely controlled by hormone action as demonstrated when sexual hormones are prevented from normal occurrence by the removal of ovaries or testes. The distribution of adult female hair over the body is intermediate between that of the embryonic or infantile condition and the arrangement in the adult male. Although man is one of the least hairy of the mammals, with the excep- tion of the aberrant whales and sea-cows, an examination of his embryonic development shows his close relationship to other members of the order of Primates. Ma I pig h ia n Layers / Corneal Layers 7xâHa\r Shaft baceous and. Root Sheaths â External-- "-- Internal-"''! â I Papilla'". Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Walter, Herbert Eugene, b. 1867; Sayles, Leonard Perkins, 1902-. New York : Macmillan Co.
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