SEBACEOUS, CERUMINOUS AND MEIBOMIAN GLANDS 283 



these glands are very widely distributed. They exist, indeed, in greater 

 or less numbers in all parts of the skin except the palms of the hands 

 and the soles of the feet. In the labia minora in the female, and in 

 portions of the prepuce and glans penis of the male, parts not provided 

 with hair, small racemose sebaceous glands are found, which produce 

 secretions differing somewhat from that formed by the ordinary glands. 



A 



E 



Fig. 61. Sebaceous glands (Sappey). 



A, a gland in its most rudimentary form: i, rudimentary hair-follicle; 2, downy hair; 3, simple 

 sebaceous follicle. B, a gland more developed: I, hair-follicle; 2, simple sebaceous follicle. C, a 

 gland with two follicles: i, hair-follicle; 2, simple follicle; 3, follicle imperfectly divided. D, a com- 

 pound gland : I, hair-follicle ; 2, lobule with three follicles ; 3, lobule with four follicles. E, a gland 

 with four lobules: i, hair-follicle; 2, 2, first lobule; 3, second lobule; 4, 4, third lobule; 5, fourth 

 lobule ; 6, excretory duct with a hair passing through it. F, a gland with four lobules : i, hair-follicle ; 

 2, 2, first lobule; 3, second lobule; 4, third lobule; 5, fourth lobule; 6, excretory duct. 



The glands in the areola of the nipple in the female are large and are 

 connected with small downy hairs. 



Nearly all the sebaceous glands are either simple racemose glands, 

 that is, presenting a number of follicles connected with a single ex- 

 cretory duct, or compound racemose glands, presenting several ducts, 

 with their follicles, opening by a common tube. Although there are 

 these variations in the size and arrangement of the glands of the 



