HAIR 



395 



/ ' / *)* " ' . N 



- '/< S'* ^ ***^ .* 



' "^ ^*Tz:^' i f V* ' v* 



^xS?^^/V..\ 



Bulbus pili. -^ 



Papilla 



-.. 



FIG. 401. 



FIG. 405. 



FIGS. 401-405. FOUR CROSS SECTIONS OKA HAIR OF THE HEAD (X 160). WITH A DIAGRAMMATIC LONGI- 

 TUDINAL VIEW FOR ORIENTATION. 



A, Cuticula; B, cortex; C, medulla. I, Str. corneum; II, str. germinativum; HI, corium. 1-3, Connective- 

 tissue sheath; i, longitudinal fiber layer; a, circular fiber layer; 3, conn, tiss hyaline membrane; 4; 

 epithelial hyaline membrane; 5, outer epithelial sheath; 6, inner epithelial sheath; 6a, Henle's layer, 

 6b, Huxley's layer; 7, cuticula of the sheath; Muse., arrector pili; Seb., sebaceous gland. 



