File:Bailey292.jpg - Revision history

S8600021: /* Fig. 292. From a model of the septum transversum and liver of a human embryo of 3 mm */

2011-08-25T03:51:43Z

Fig. 292. From a model of the septum transversum and liver of a human embryo of 3 mm

← Older revision		Revision as of 14:51, 25 August 2011
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	As the heart develops it migrates caudally, and by corresponding migration the pericardial cavity draws the ventral edge of the septum transversum farther caudally, so that the cephalic surface of the latter faces ventrally and cranially.		As the heart develops it migrates caudally, and by corresponding migration the pericardial cavity draws the ventral edge of the septum transversum farther caudally, so that the cephalic surface of the latter faces ventrally and cranially.

	In other words the septum comes to lie in an oblique cranio-caudal plane. The pericardial cavity therefore comes to lie ventral to the ductus pleuro-pericardiaci. The latter one on each side of the mesentery are two passages which communicate on the one hand with the pericardial cavity and on the other hand with the peritoneal cavity, while they themselves form the cavities into which the lungs grow the pleural cavities. (Compare Figs. [[:File:Bailey292.jpg\|Fig. 292]]~~292~~, [[:File:Bailey293.jpg\|Fig. 293]] and [[:File:Bailey294.jpg\|Fig. 294]].)		In other words the septum comes to lie in an oblique cranio-caudal plane. The pericardial cavity therefore comes to lie ventral to the ductus pleuro-pericardiaci. The latter one on each side of the mesentery are two passages which communicate on the one hand with the pericardial cavity and on the other hand with the peritoneal cavity, while they themselves form the cavities into which the lungs grow the pleural cavities. (Compare Figs. [[:File:Bailey292.jpg\|Fig. 292]], [[:File:Bailey293.jpg\|Fig. 293]] and [[:File:Bailey294.jpg\|Fig. 294]].)

S8600021: /* Fig. 292. From a model of the septum transversum and liver of a human embryo of 3 mm */

2011-08-25T03:51:30Z

Fig. 292. From a model of the septum transversum and liver of a human embryo of 3 mm

← Older revision		Revision as of 14:51, 25 August 2011
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	As the heart develops it migrates caudally, and by corresponding migration the pericardial cavity draws the ventral edge of the septum transversum farther caudally, so that the cephalic surface of the latter faces ventrally and cranially.		As the heart develops it migrates caudally, and by corresponding migration the pericardial cavity draws the ventral edge of the septum transversum farther caudally, so that the cephalic surface of the latter faces ventrally and cranially.

	In other words the septum comes to lie in an oblique cranio-caudal plane. The pericardial cavity therefore comes to lie ventral to the ductus pleuro-pericardiaci. The latter one on each side of the mesentery are two passages which communicate on the one hand with the pericardial cavity and on the other hand with the peritoneal cavity, while they themselves form the cavities into which the lungs grow the pleural cavities. (Compare Figs. 292, 293 and 294.)		In other words the septum comes to lie in an oblique cranio-caudal plane. The pericardial cavity therefore comes to lie ventral to the ductus pleuro-pericardiaci. The latter one on each side of the mesentery are two passages which communicate on the one hand with the pericardial cavity and on the other hand with the peritoneal cavity, while they themselves form the cavities into which the lungs grow the pleural cavities. (Compare Figs. [[:File:Bailey292.jpg\|Fig. 292]]292, [[:File:Bailey293.jpg\|Fig. 293]] and [[:File:Bailey294.jpg\|Fig. 294]].)

S8600021: /* Fig. 292. From a model of the septum transversum, liver etc., of a human embryo of 3 mm */

2011-08-25T03:50:42Z

Fig. 292. From a model of the septum transversum, liver etc., of a human embryo of 3 mm

← Older revision		Revision as of 14:50, 25 August 2011
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	==Fig. 292. From a model of the septum transversum, liver ~~etc.,~~ of a human embryo of 3 mm==		==Fig. 292. From a model of the septum transversum and liver of a human embryo of 3 mm==

	His, Kollmann.		His, Kollmann.

	The communication between the pericardial cavity and the rest of the embryonic ccelom is soon partly cut off by the development of a transverse fold - the septum transversum. This septum is formed in close relation with the omphalomesenteric veins. These vessels unite in the sinus venosus at the caudal end of the heart, whence they diverge in the splanchnic mesoderm. They are thus embedded in the mesodermal layer of the splanchnopleure, and as the latter closes in from either side to form the gut, the vessels form ridge-like projections into the ccelom. As the vessels increase in size, the ridges become so large that the splanchnic mesoderm is pushed outward against the parietal mesoderm and fuses with it (Fig. 291). Thus a partition is formed on each side, which is attached on the one hand to the mesentery and on the other hand to the ventral and lateral body walls, and which contains the omphalomesenteric veins. It is obvious that these partitions, forming the septum transversum, close the ventral part of the communication between the pericardial cavity and the rest of the ccelom. The dorsal part of the communication remains open on each side of the mesentery as the ductus pleuro-pericardiacus (dorsal parietal recess of His) (Figs. 291 and 292).		The communication between the pericardial cavity and the rest of the embryonic ccelom is soon partly cut off by the development of a transverse fold - the septum transversum. This septum is formed in close relation with the omphalomesenteric veins. These vessels unite in the sinus venosus at the caudal end of the heart, whence they diverge in the splanchnic mesoderm. They are thus embedded in the mesodermal layer of the splanchnopleure, and as the latter closes in from either side to form the gut, the vessels form ridge-like projections into the ccelom. As the vessels increase in size, the ridges become so large that the splanchnic mesoderm is pushed outward against the parietal mesoderm and fuses with it ([[:File:Bailey291.jpg\|Fig. 291]]). Thus a partition is formed on each side, which is attached on the one hand to the mesentery and on the other hand to the ventral and lateral body walls, and which contains the omphalomesenteric veins. It is obvious that these partitions, forming the septum transversum, close the ventral part of the communication between the pericardial cavity and the rest of the ccelom. The dorsal part of the communication remains open on each side of the mesentery as the ductus pleuro-pericardiacus (dorsal parietal recess of His) (Figs. [[:File:Bailey291.jpg\|Fig. 291]] and [[:File:Bailey292.jpg\|Fig. 292]]).

	As the heart develops it migrates caudally, and by corresponding migration the pericardial cavity draws the ventral edge of the septum transversum farther caudally, so that the cephalic surface of the latter faces ventrally and cranially.		As the heart develops it migrates caudally, and by corresponding migration the pericardial cavity draws the ventral edge of the septum transversum farther caudally, so that the cephalic surface of the latter faces ventrally and cranially.

S8600021: /* Fig. 292. From a model of the septum transversum, liver etc., of a human embryo of 3 mm */

2011-05-01T02:05:50Z

Fig. 292. From a model of the septum transversum, liver etc., of a human embryo of 3 mm

← Older revision		Revision as of 13:05, 1 Mayıs 2011
Line 2:		Line 2:

	His, Kollmann.		His, Kollmann.

			The communication between the pericardial cavity and the rest of the embryonic ccelom is soon partly cut off by the development of a transverse fold - the septum transversum. This septum is formed in close relation with the omphalomesenteric veins. These vessels unite in the sinus venosus at the caudal end of the heart, whence they diverge in the splanchnic mesoderm. They are thus embedded in the mesodermal layer of the splanchnopleure, and as the latter closes in from either side to form the gut, the vessels form ridge-like projections into the ccelom. As the vessels increase in size, the ridges become so large that the splanchnic mesoderm is pushed outward against the parietal mesoderm and fuses with it (Fig. 291). Thus a partition is formed on each side, which is attached on the one hand to the mesentery and on the other hand to the ventral and lateral body walls, and which contains the omphalomesenteric veins. It is obvious that these partitions, forming the septum transversum, close the ventral part of the communication between the pericardial cavity and the rest of the ccelom. The dorsal part of the communication remains open on each side of the mesentery as the ductus pleuro-pericardiacus (dorsal parietal recess of His) (Figs. 291 and 292).

			As the heart develops it migrates caudally, and by corresponding migration the pericardial cavity draws the ventral edge of the septum transversum farther caudally, so that the cephalic surface of the latter faces ventrally and cranially.

			In other words the septum comes to lie in an oblique cranio-caudal plane. The pericardial cavity therefore comes to lie ventral to the ductus pleuro-pericardiaci. The latter one on each side of the mesentery are two passages which communicate on the one hand with the pericardial cavity and on the other hand with the peritoneal cavity, while they themselves form the cavities into which the lungs grow the pleural cavities. (Compare Figs. 292, 293 and 294.)


	{{Template:Bailey 1921 Figures}}		{{Template:Bailey 1921 Figures}}

	[[Category:Human]] [[Category:Coelomic Cavity]] [[Category:Wilhelm His]] [[Category:Kollmann]]		[[Category:Human]] [[Category:Coelomic Cavity]] [[Category:Wilhelm His]] [[Category:Kollmann]]

S8600021 at 02:04, 1 Mayıs 2011

2011-05-01T02:04:40Z

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	{{Template:Bailey 1921 Figures}}		{{Template:Bailey 1921 Figures}}

	[[Category:Human]] [[Category:Coelomic Cavity]] [[Category:His]] [[Category:Kollmann]]		[[Category:Human]] [[Category:Coelomic Cavity]] [[Category:Wilhelm His]] [[Category:Kollmann]]

S8600021 at 02:03, 1 Mayıs 2011

2011-05-01T02:03:38Z

← Older revision		Revision as of 13:03, 1 Mayıs 2011
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	==Fig. 292. From a model of the septum transversum, liver etc., of a human embryo of 3 mm==		==Fig. 292. From a model of the septum transversum, liver etc., of a human embryo of 3 mm==

	His, ~~Kollman~~.		His, Kollmann.

	{{Template:Bailey 1921 Figures}}		{{Template:Bailey 1921 Figures}}

	[[Category:Human]] [[Category:Coelomic Cavity]] [[Category:~~Kollman~~]]		[[Category:Human]] [[Category:Coelomic Cavity]] [[Category:His]] [[Category:Kollmann]]

S8600021 at 02:02, 1 Mayıs 2011

2011-05-01T02:02:27Z

← Older revision		Revision as of 13:02, 1 Mayıs 2011
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	==Fig. 292. From a model of the septum transversum, liver etc., of a human embryo of 3 mm==		==Fig. 292. From a model of the septum transversum, liver etc., of a human embryo of 3 mm==

	His, ~~Koilman~~.		His, Kollman.

	{{Template:Bailey 1921 Figures}}		{{Template:Bailey 1921 Figures}}

	[[Category:Human]] [[Category:Coelomic Cavity]]		[[Category:Human]] [[Category:Coelomic Cavity]] [[Category:Kollman]]

S8600021 at 21:23, 2 February 2011

2011-02-02T21:23:12Z

← Older revision		Revision as of 08:23, 3 February 2011
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			==Fig. 292. From a model of the septum transversum, liver etc., of a human embryo of 3 mm==

			His, Koilman.

	{{Template:Bailey 1921 Figures}}		{{Template:Bailey 1921 Figures}}

	[[Category:Human]] [[Category:~~Coelom~~]]		[[Category:Human]] [[Category:Coelomic Cavity]]

S8600021: {{Template:Bailey 1921 Figures}} Category:Human Category:Coelom

2011-01-23T12:13:02Z

{{Template:Bailey 1921 Figures}} Category:Human Category:Coelom

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{{Template:Bailey 1921 Figures}}

[[Category:Human]] [[Category:Coelom]]