HUMAN ANATOMY. 



j A n - Hurts that collectively constitute the 



an ,l ,, P amte gbod., opening 1 ^^^SedLm the enveloping layer of 

 scc-rt-tin- CSrpBS mammae), a 



fat and areolar ti-m . n_^ V pinned subiect, before the occurrence of preg- 



ieen in tin- voting, well-de loped i su leg the thoraac 



nan, ,mm;e form two hemispheri _twns i F ^^ 



^I^^KTS^StotCd thefixthrib. The 



t() the axillary lx,riK-r and Imm elliptical the horizontal diameter, from 



outline ,,f the organ is not qu.te circular ut ^elhpU^ ^ ^.^ Thg 



I0 - , V-4fi m. ), being aboiU metre Q{ ^ breagt 



L rf <s tt ^^^ f r gianduiar tissue> 



FIG. 1710. 



"Lobule of gland-tissue 



k: : i: ..: . 





\ 



Excretory duci 



Ainjiulla 

 \ 

 Lactiferous duct 



Left mamma drawn Horn IIVIIIR sutijo I ; ducts and glandular tissue have been drawn from disso tion. 



excq>t beneath the nipplr and, in places, on the deep muscular surface. In the young 



subject, in \\hoin the yl.md has lu-vcr cnl.irir e d in consequence of pregnancy, the secre- 



\ . 1\ -mall in amount and masked by the fat that penetrates between 



'olxiles. The approximate summit of each breast, wlu-n tirm and non-pendulous 



.inu \vonn-n, is m.ukrd l>v the conical or \vart-likr nipple (papilla mammae), 



uhii \\ li-- i'p|i'sit- the low. r lionU-r of tin- fourth rib and is pierced by the excretory 



t/m-fs, from tin- lobfs. The nipple, about I cm. high, and 



ni.tik. ,! l.y miin<-r.us shallow furrows, is surrounded by the areo/a, a cutaneous zone 

 i in diameter th.it is modelled by minute low elevations produced by the 



small subcutaneous n -'A-. tx gUmd* of Montgomery ) which represent isolated 



accessory portions of secrrt>ry tiue. Although varying with the complexion, the 



