File:Gray0992.jpg - Revision history

S8600021: /* Week 4 Human Cloaca */

2011-04-28T07:39:53Z

Week 4 Human Cloaca

← Older revision		Revision as of 18:39, 28 April 2011
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			* "entoderm" is the historic name for "endoderm".

	{{Gray Anatomy}}		{{Gray Anatomy}}

	[[Category:Historic Embryology]] [[Category:Gray's 1918 Anatomy]] [[Category:Gastrointestinal Tract]] [[Category:Genital]] [[Category:Week 4]]		[[Category:Historic Embryology]] [[Category:Gray's 1918 Anatomy]] [[Category:Gastrointestinal Tract]] [[Category:Bladder]] [[Category:Genital]] [[Category:Week 4]]

S8600021 at 05:46, 28 April 2011

2011-04-28T05:46:46Z

← Older revision		Revision as of 16:46, 28 April 2011
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	Cloaca of human embryo from twenty-five to twenty-seven days old. (From model by Keibel.)		Cloaca of human embryo from twenty-five to twenty-seven days old. (From model by Keibel.)

	The entodermal cloaca is divided into a dorsal and a ventral part by means of a partition, the urorectal septum (Fig. 992), which grows downward from the ridge separating the allantoic from the cloacal opening of the intestine and ultimately fuses with the cloacal membrane and divides it into an anal and a urogenital part. The dorsal part of the cloaca forms the rectum, and the anterior part of the urogenital sinus and bladder. For a time a communication named the cloacal duct exists between the two parts of the cloaca below the urorectal septum; this duct occasionally persists as a passage between the rectum and urethra. The anal canal is formed by an invagination of the ectoderm behind the urorectal septum. This invagination is termed the proctodeum, and it meets with the entoderm of the hind-gut and forms with it the anal membrane.		The entodermal cloaca is divided into a dorsal and a ventral part by means of a partition, the urorectal septum (Fig. 992), which grows downward from the ridge separating the allantoic from the cloacal opening of the intestine and ultimately fuses with the cloacal membrane and divides it into an anal and a urogenital part. The dorsal part of the cloaca forms the rectum, and the anterior part of the urogenital sinus and bladder. For a time a communication named the cloacal duct exists between the two parts of the cloaca below the urorectal septum; this duct occasionally persists as a passage between the rectum and urethra. The anal canal is formed by an invagination of the ectoderm behind the urorectal septum. This invagination is termed the proctodeum, and it meets with the entoderm of the hind-gut and forms with it the anal membrane.

S8600021 at 05:46, 28 April 2011

2011-04-28T05:46:36Z

← Older revision		Revision as of 16:46, 28 April 2011
Line 3:		Line 3:
	Cloaca of human embryo from twenty-five to twenty-seven days old. (From model by Keibel.)		Cloaca of human embryo from twenty-five to twenty-seven days old. (From model by Keibel.)

			The entodermal cloaca is divided into a dorsal and a ventral part by means of a partition, the urorectal septum (Fig. 992), which grows downward from the ridge separating the allantoic from the cloacal opening of the intestine and ultimately fuses with the cloacal membrane and divides it into an anal and a urogenital part. The dorsal part of the cloaca forms the rectum, and the anterior part of the urogenital sinus and bladder. For a time a communication named the cloacal duct exists between the two parts of the cloaca below the urorectal septum; this duct occasionally persists as a passage between the rectum and urethra. The anal canal is formed by an invagination of the ectoderm behind the urorectal septum. This invagination is termed the proctodeum, and it meets with the entoderm of the hind-gut and forms with it the anal membrane.

S8600021 at 05:45, 28 April 2011

2011-04-28T05:45:49Z

← Older revision		Revision as of 16:45, 28 April 2011
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	{{Gray Anatomy}}		{{Gray Anatomy}}

	[[Category:Historic Embryology]] [[Category:Gray's 1918 Anatomy]] [[Category:Gastrointestinal Tract]] [[Category:Genital]]		[[Category:Historic Embryology]] [[Category:Gray's 1918 Anatomy]] [[Category:Gastrointestinal Tract]] [[Category:Genital]] [[Category:Week 4]]

S8600021: ==Week 4 Human Cloaca== Cloaca of human embryo from twenty-five to twenty-seven days old. (From model by Keibel.) {{Gray Anatomy}} Category:Historic Embryology Category:Gray's 1918 Anatomy Category:Gastrointestinal Tract [[Category:Genit

2011-04-28T05:45:21Z

==Week 4 Human Cloaca== Cloaca of human embryo from twenty-five to twenty-seven days old. (From model by Keibel.) {{Gray Anatomy}} Category:Historic Embryology Category:Gray's 1918 Anatomy Category:Gastrointestinal Tract [[Category:Genit

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==Week 4 Human Cloaca==

Cloaca of human embryo from twenty-five to twenty-seven days old. (From model by Keibel.)

{{Gray Anatomy}}

[[Category:Historic Embryology]] [[Category:Gray's 1918 Anatomy]] [[Category:Gastrointestinal Tract]] [[Category:Genital]]