THE MAMMARY GLANDS 465 



The ovary consists of a stroma in which are embedded the 

 Graafian follicles, and of a covering of columnar cells, the 

 germinal epithelium. The stroma is invested beneath the 

 epithelium by a dense fibrous layer, the tunica albuginea, 

 and consists of connective tissue with numerous cells, as well 

 as of elastic fibers, with some muscular tissue and bloodvessels. 



The Graafian follicles consist of an external fibrous coat, 

 and beneath it a coat called the ovicapsule, lined internally 

 with a layer of cells, the membrana granulosa. Within this 

 last-named layer is the ovum, invested by the discus proligerus, 

 a layer of cells derived from the membrana granulosa, together 

 with the liquor folliculi. 



THE PAROVARIUM 



The parovarium, organ of Rosenmuller, is a fetal remnant 

 lying in the broad ligament between the ovary and Fallopian 

 tube. It consists of several vertical tubes, lined with epithelium, 

 whose lower ends run toward the hilum of the ovary, and 

 whose upper ends are united by a horizontal tube, the duct 

 of Gaertner. 



THE MAMMARY GLANDS 



These are accessory to the generative system and secrete 

 the .milk. They are two rounded eminences, one on each side 

 of the thorax, between the sternum and axilla and the third 

 and seventh ribs. Just below the centre is a conical eminence, 

 the nipple, which is dark, and is surrounded by a pinkish 

 areola which darkens in pregnancy. It presents the orifices 

 of the lactiferous ducts, and consists of vessels mixed in with 

 plain muscular fibers, and by friction may be made to undergo 

 erection. 



The mamma consists of u number of lobes separated by 

 fibrous tissue and some adipose tissue. The lobes are divided 

 ju id subdivided into smaller lobules, which are in turn made 

 up of alveoli. Each lobe has an excretory (galactophorous) 

 duct, and these, about sixteen in number, converge to the 

 areola, there dilating into ampullae, or sinuses. They then 

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