File:Keith1902 fig057.jpg - Revision history

Z8600021 at 06:23, 21 September 2016

2016-09-21T06:23:56Z

← Older revision		Revision as of 17:23, 21 September 2016
Line 1:		Line 1:
	==Fig. 57 Showing the various stages in tho development of the Mamma==		==Fig. 57 Showing the various stages in tho development of the Mamma==
			A = Epiblast. B = Subcutaneous tissue (mesoblast). C = Pectoralis major.

	Seven stages may be recognised in the developmental history of the glandular mammary tissue. Four of these take place before birth :		Seven stages may be recognised in the developmental history of the glandular mammary tissue. Four of these take place before birth :

Z8600021: /* Fig. 57 Showing the various stages in tho development of the Mamma */

2016-09-21T06:22:05Z

Fig. 57 Showing the various stages in tho development of the Mamma

← Older revision		Revision as of 17:22, 21 September 2016
Line 1:		Line 1:
	==Fig. 57 Showing the various stages in tho development of the Mamma==		==Fig. 57 Showing the various stages in tho development of the Mamma==

	Seven stages may be recognised in the developmental history of the glandular mammary tissue.		Seven stages may be recognised in the developmental history of the glandular mammary tissue. Four of these take place before birth :

	~~Four of these take place before birth :~~
	~~1st (Fig. 57 A). The deeper layer of epiblast thickens over the mammary area ; this thickening represents a part of the mammary ridge or line. This stage is seen in the 2nd month.~~

			'''1st''' (Fig. 57 A). The deeper layer of epiblast thickens over the mammary area ; this thickening represents a part of the mammary ridge or line. This stage is seen in the 2nd month.

	~~2nd (Fig. 57 B). The thickening becomes depressed, thus giving rise to a slight pit on the surface.~~

			'''2nd''' (Fig. 57 B). The thickening becomes depressed, thus giving rise to a slight pit on the surface.

	~~3rd (Fig. 57 C). From the depression arises a number of buds, exactly similar to those of sweat gland (5 th month). The stalks of these buds form the epithelial lining of the lactiferous ducts.~~

			'''3rd''' (Fig. 57 C). From the depression arises a number of buds, exactly similar to those of sweat gland (5 th month). The stalks of these buds form the epithelial lining of the lactiferous ducts.

	4th (Fig. 57 D). The lobular buds, for each bud develops into a lobe, subdivide at their growing extremities. At first solid, they begin to caniculize (7th to 9th months). At or about birth the pit or depression, from which the lobular buds originated, is raised, evaginated and forms the surface of the nipple (Fig. 5 7 D).
			'''4th''' (Fig. 57 D). The lobular buds, for each bud develops into a lobe, subdivide at their growing extremities. At first solid, they begin to caniculize (7th to 9th months). At or about birth the pit or depression, from which the lobular buds originated, is raised, evaginated and forms the surface of the nipple (Fig. 5 7 D).

Z8600021 at 06:21, 21 September 2016

2016-09-21T06:21:17Z

@@ Line 1: / Line 1: @@
 ==Fig. 57 Showing the various stages in tho development of the Mamma==
 {{Keith1902_6_figures}}
 {{Human embryology morphology 1902 footer}}

Z8600021 at 23:15, 6 Ocak 2014

2014-01-06T23:15:53Z

← Older revision	Revision as of 10:15, 7 Ocak 2014
Line 1:	Line 1:
		==Fig. 57 Showing the various stages in tho development of the Mamma==

		{{Keith1902_6_figures}}

		{{Human embryology morphology 1902 footer}}

Z8600021 at 23:14, 6 Ocak 2014

2014-01-06T23:14:55Z

New page