Human anatomy, including structure and development and practical considerations . of the nyniphie and the ghins jjenis and clitoridis. With the exception ofthose rej^ions in which the i^rowth is suthciently lon^-^ to constitute a complete cover-inj4—the scalp, bearded i)arts of the face in the male, axilke and mons pubis—thehairs are for the most part short and scattered, although subject to great indi\idualvariation and sometimes to remarkable redundance. The hairs in various locations are known by special names ; those of the scalpbeing capilli; of the eyebrows, supcrcilia ; of the eyelashes
Human anatomy, including structure and development and practical considerations . of the nyniphie and the ghins jjenis and clitoridis. With the exception ofthose rej^ions in which the i^rowth is suthciently lon^-^ to constitute a complete cover-inj4—the scalp, bearded i)arts of the face in the male, axilke and mons pubis—thehairs are for the most part short and scattered, although subject to great indi\idualvariation and sometimes to remarkable redundance. The hairs in various locations are known by special names ; those of the scalpbeing capilli; of the eyebrows, supcrcilia ; of the eyelashes, cilia; of the nostrils,vibrissce; of the external ear, trai^i; of the beard, barba ; of the axilUe, hirci; ofthe pubes, pubcs ; while the line downy hairs that cover other parts of the body aredesignated lanugo. The closest set hairs are on the scalp, where, according to Brunn, on the vertexthey number from 300-320, and in the occipital and frontal regions from 200-240per square centimeter. On the chin 44 were counted, on the mons pubis 30-35, Ejiidermis Sebaceous gland. Hair-papilla Inner root-sheath Outer root-sheath Papilla Paniculusadiposus Section of scalp, slu)\\ iiig longitudiiiallv cut hair-follicles. X 14. on the extensor surface of the forearm 24 and on the back of the hand iS for likeareas. Even where their distribution is seemingly uniform, close insj^cction showsthe hairs to be arranged in groups of from two to five. The length of the hairs includes the extremes presented by the lanugo, only afew millimeters long, on the one hand, and by the scalp-growth, sometimes measur-ing 150 cm. (108 in.) or more, on the other. Their thickness, likewise, showsmuch variation, not only in different races, individuals and regions, but also in thesame person and part of the body, as on the scalp where fine and coarse hairs maylie side by side. The thickest scalp-hairs have a diameter of ,162 mm. and thefinest one of .011 mm., with all intermediate sizes. The hairs of t
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Keywords: ., bookauthormc, bookcentury1900, bookdecade1910, booksubjectanatomy
