DIRECTIONS FOE LABORATORY WORK 809 



(352). Type of lining epithelium? Are glands present? What is the 

 striking common characteristic of the tunica propria of the entire duct 

 system of the female genital apparatus? 



(E) THE EXTERNAL GENITALS. 



These include: a, the vestibule; b, the labia minora; c, the labia 

 majora ; d, the clitoris ; e, the hymen ; f , the minor vestibular glands, and 

 g, the major vestibular glands. Enumerate the histologic characteristics 

 of each. What are the male homologues for d, f, and g? The major 

 vestibular glands (glands of Bartholin) open into the groove between 

 the hymen and the labium minus. Sketch h.p. several adjacent alveoli 

 of this gland (353). 



(F) THE MAMMARY GLAND (Mamma). 



(1) Study l.p. a section of the active (lactating) gland. Note the 

 arrangement into lobes and lobules. Sketch (354), showing the inter- 

 lobar lactiferous duct and the inter- and intralobular ducts. Make h.p. 

 sketch (355) of an alveolus, noting especially the cytoplasmic contents 

 of the lining cells. Significance of the basket cells? of the basal stria- 

 tions of the secretory cells? 



(2) Make l.p. study of a resting mammary gland. Sketch (356). 



(3) Examine a cover-glass preparation of fresh milk stained with 

 methylene blue. Note especially the leucocytes and fat droplets. Sketch 

 (357). Derivation of the leucocytes? 



(4) Enumerate the histologic features of: a, the mammilla; b, the 

 areola ; c, the glands of Montgomery, and d, the integument of the 

 mammae. Character and significance of 'witches milk'? 



XIX. DUCTLESS GLANDS 



(Endocrine Glands; Organs of Internal Secretion; Cryptorhetic Glands) 



(A) THE SUPRARENAL GLANDS (Adrenals). 



(1) Examine a divided fresh suprarenal gland of some mammal. 

 Note the yellowish coloration of the cortex, and the red color of the 

 medulla; note also the capsule and the hilus. Cause of difference in 

 color between cortex and medulla? 



(2) Study l.p. stained vertical sections of the human and the dog's 

 adrenal. Chief differences? Sketch (358) a narrow segment from cap- 

 sule to center of medulla. Make h.p. sketches (359) of groups of cells 



