BGDA Practical 7 - Week 3 - Revision history

Z8600021 at 10:50, 12 Mayıs 2019

2019-05-12T10:50:47Z

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	\| valign="bottom"\|{{Quail gastrulation ECM movie}}		\| valign="bottom"\|{{Quail gastrulation ECM movie}}
	\|}		\|}

			{{BGDA Practical 6 - Week 3 Interactive}}

Z8600021 at 10:47, 12 Mayıs 2019

2019-05-12T10:47:17Z

← Older revision		Revision as of 21:47, 12 Mayıs 2019
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	{{~~Template:~~BGDALab7}}		{{BGDALab7}}
	==Introduction==		==Introduction==
	Key events of human development during the third week (week 3) following fertilization clinical {{GA}} week 5.		Key events of human development during the third week (week 3) following fertilization clinical {{GA}} week 5.
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	# [[Basic_-_Primitive_Heart_Tube\|Cardiac development]] - forming the simple heart tube within splanchnic mesoderm.		# [[Basic_-_Primitive_Heart_Tube\|Cardiac development]] - forming the simple heart tube within splanchnic mesoderm.
	# {{Somitogenesis}} - when part of the mesoderm layer segments commences during week 3 to form balls of mesoderm called somites. The later migration of cells forms the mesoderm germ layer. An embryonic connective tissue ([[M#mesenchyme\|mesenchyme]]) which forms nearly all the connective tissues of the body (the head is different). Somitogenesis is when part of this layer segments during week 3 to form balls of mesoderm called somites, note that the majority of somites form during week 4.		# {{Somitogenesis}} - when part of the mesoderm layer segments commences during week 3 to form balls of mesoderm called somites. The later migration of cells forms the mesoderm germ layer. An embryonic connective tissue ([[M#mesenchyme\|mesenchyme]]) which forms nearly all the connective tissues of the body (the head is different). Somitogenesis is when part of this layer segments during week 3 to form balls of mesoderm called somites, note that the majority of somites form during week 4.
	# {{~~Intraembryonic~~ coelom}} - Within the embryonic disc lateral plate mesoderm a space (coelom) forms, it lies within the embryo and so is called the '''intraembryonic coelom'''. This single "horseshoe-shaped" space will form the 3 major body cavities: '''pericardial''' (around the heart), '''pleural''' (around the lungs) and '''peritoneal''' (around the GIT and visceral organs).		# {{Intra-embryonic coelom}} - Within the embryonic disc lateral plate mesoderm a space (coelom) forms, it lies within the embryo and so is called the '''intraembryonic coelom'''. This single "horseshoe-shaped" space will form the 3 major body cavities: '''pericardial''' (around the heart), '''pleural''' (around the lungs) and '''peritoneal''' (around the GIT and visceral organs).

	==Ectoderm==		==Ectoderm==

Z8600021 at 04:27, 12 Mayıs 2019

2019-05-12T04:27:06Z

← Older revision		Revision as of 15:27, 12 Mayıs 2019
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	Different regions of mesoderm form early intermediate structures.		Different regions of mesoderm form early intermediate structures.
	# [[Basic_-_Primitive_Heart_Tube\|Cardiac development]] - forming the simple heart tube within splanchnic mesoderm.		# [[Basic_-_Primitive_Heart_Tube\|Cardiac development]] - forming the simple heart tube within splanchnic mesoderm.
	# [[Somitogenesis]] - when part of the mesoderm layer segments during week 3 to form balls of mesoderm called somites. The later migration of cells forms the mesoderm germ layer. An embryonic connective tissue ([[M#mesenchyme\|mesenchyme]]) which forms nearly all the connective tissues of the body (the head is different). Somitogenesis is when part of this layer segments during week 3 to form balls of mesoderm called somites.		# {{Somitogenesis}} - when part of the mesoderm layer segments commences during week 3 to form balls of mesoderm called somites. The later migration of cells forms the mesoderm germ layer. An embryonic connective tissue ([[M#mesenchyme\|mesenchyme]]) which forms nearly all the connective tissues of the body (the head is different). Somitogenesis is when part of this layer segments during week 3 to form balls of mesoderm called somites, note that the majority of somites form during week 4.
	# ~~[[I#intraembryonic coelom\|~~Intraembryonic coelom]] - Within the embryonic disc lateral plate mesoderm a space (coelom) forms, it lies within the embryo and so is called the '''intraembryonic coelom'''. This single "horseshoe-shaped" space will form the 3 major body cavities: '''pericardial''' (around the heart), '''pleural''' (around the lungs) and '''peritoneal''' (around the GIT and visceral organs).		# {{Intraembryonic coelom}} - Within the embryonic disc lateral plate mesoderm a space (coelom) forms, it lies within the embryo and so is called the '''intraembryonic coelom'''. This single "horseshoe-shaped" space will form the 3 major body cavities: '''pericardial''' (around the heart), '''pleural''' (around the lungs) and '''peritoneal''' (around the GIT and visceral organs).

	==Ectoderm==		==Ectoderm==

Z8600021: Protected "BGDA Practical 7 - Week 3" ([Edit=Allow only administrators] (indefinite) [Move=Allow only administrators] (indefinite))

2018-05-13T05:09:39Z

Protected "BGDA Practical 7 - Week 3" ([Edit=Allow only administrators] (indefinite) [Move=Allow only administrators] (indefinite))

← Older revision	Revision as of 16:09, 13 Mayıs 2018
(No difference)

Z8600021 at 05:09, 13 Mayıs 2018

2018-05-13T05:09:27Z

← Older revision		Revision as of 16:09, 13 Mayıs 2018
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	==Ectoderm==		==Ectoderm==
	The central portion of the embryonic disc forms the '''neural plate''', the edge of this plate forms '''neural crest''' and outside of this again will contribute the epitheium of the skin. (this will be covered in more detail week 4).		The central portion of the embryonic disc forms the '''neural plate''', the edge of this plate forms '''neural crest''' and outside of this again will contribute the epitheium of the skin. (this will be covered in more detail week 4).
			<br>
	{\|		{\|
	! Neural Plate		! Neural Plate
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	\| [[File::Mesoderm-cartoon2.jpg\|300px]]		\| [[File::Mesoderm-cartoon2.jpg\|300px]]
	\|}		\|}
			<br>
	{\|		{\|
	\| [[File:Stage7-sem2.jpg\|250px\|link=Carnegie stage 7]]		\| [[File:Stage7-sem2.jpg\|250px\|link=Carnegie stage 7]]

Z8600021 at 05:05, 13 Mayıs 2018

2018-05-13T05:05:50Z

← Older revision		Revision as of 16:05, 13 Mayıs 2018
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	==Ectoderm==		==Ectoderm==
	The central portion of the embryonic disc forms the '''neural plate''', the edge of this plate forms '''neural crest''' and outside of this again will contribute the epitheium of the skin. (this will be covered in more detail week 4).		The central portion of the embryonic disc forms the '''neural plate''', the edge of this plate forms '''neural crest''' and outside of this again will contribute the epitheium of the skin. (this will be covered in more detail week 4).

			{\|
			! Neural Plate
			! Neural Groove
			\|-
			\| [[File:Mesoderm-cartoon1.jpg\|300px]]
			\| [[File::Mesoderm-cartoon2.jpg\|300px]]
			\|}

	{\|		{\|

Z8600021 at 02:34, 17 April 2018

2018-04-17T02:34:38Z

← Older revision		Revision as of 13:34, 17 April 2018
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	===Gastrulation===		===Gastrulation===
	~~Gastrulation is continuing through~~ week 3 as cells ~~continue~~ to migrate through the primitive streak contributing to mesoderm.		Through week 3 the process of {{gastrulation}} continues, as cells to migrate through the primitive streak contributing to {{mesoderm}}.

	As the embryonic disc grows overall in size, the primitive streak appears to become more caudal as it does not increase in size.		As the embryonic disc grows overall in size, the primitive streak appears to become more caudal as it does not increase in size.
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	===Folding===		===Folding===
	Endoderm, mesoderm and ectoderm layers. There are two major folding processes that take place during this time.		Endoderm, mesoderm and ectoderm layers. There are two major folding processes that take place during this time.
	# Folding of the whole embryonic disc ventrally, separates the endoderm to form the epithelial lining of the gut. Folding of the [[E#embryonic disc\|embryonic disc]] occurs ventrally around the ~~[[N#~~notochord~~\|notochord]]~~, which forms a rod-like region running rostro-caudally in the midline.		# Folding of the whole embryonic disc ventrally, separates the endoderm to form the epithelial lining of the gut. Folding of the [[E#embryonic disc\|embryonic disc]] occurs ventrally around the {{notochord}}, which forms a rod-like region running rostro-caudally in the midline.
	# Folding of the ecoderm will form a [[N#neural groove\|neural groove]], then closing to form a [[N#neural tube\|neural tube]], separating the neural ectoderm from the embryo surface ectoderm.		# Folding of the ecoderm will form a [[N#neural groove\|neural groove]], then closing to form a [[N#neural tube\|neural tube]], separating the neural ectoderm from the embryo surface ectoderm.

Z8600021 at 00:29, 15 Mayıs 2017

2017-05-15T00:29:18Z

← Older revision		Revision as of 11:29, 15 Mayıs 2017
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	\| dermatome and myotome		\| dermatome and myotome
	\|}		\|}

			{{Somite parts table}}
	===Sclerotome===		===Sclerotome===
	{\|		{\|

Z8600021 at 04:10, 17 Mayıs 2016

2016-05-17T04:10:15Z

← Older revision		Revision as of 15:10, 17 Mayıs 2016
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	==Additional Information==		==Additional Information==
	{{Med Prac additional Information}}		{{Med Prac additional Information}}
	~~===Embryo Stages and Events===~~
	~~{\| class="prettytable"~~
	~~\| width= "50px" \|'''Day'''~~
	~~\| width= "100px" \|'''Stage'''~~
	~~\| '''Event'''~~

	\|-
	~~\| <center>15</center>~~
	\|
	\|

	\|-
	~~\| <center>16</center>~~
	~~\| [[Carnegie stage 7\|Stage 7]]~~
	\| [[Image:Stage7.jpg\|120px\|left]] '''Primitive node''' (Hensen's node, primitive knot) The small circular region located at the cranial end of the primitive streak, where gastrulation occurs, and is a controller of this process. The second role is to act as an initial generator of the left-right (L-R) body axis.

	\|-
	~~\| <center>17</center>~~
	~~\|  ~~
	~~\|  ~~

	\|-
	~~\| <center>18</center>~~
	~~\| [[Carnegie stage 8\|Stage 8]]~~
	~~\| [[Image:Stage8_human.jpg\|120px\|left]] [[Neural System Development\|Neural]] neurogenesis, neural groove and folds are first seen~~

	\|-
	~~\| <center>19</center>~~
	~~\|  ~~
	~~\| [[Image:Stage8_SEM1.jpg\|120px\|left]]~~

	\|-
	~~\| <center>20</center>~~
	~~\| [[Carnegie stage 9\|Stage 9]]~~
	~~\| [[File:Stage9_bf1.jpg\|200px\|link=Carnegie stage 9]] [[Somitogenesis\|Musculoskeletal]] somitogenesis - first somites form and continue to be added in sequence caudally~~

	~~[[Neural System Development\|Neural]] - three main divisions of the brain, which are not cerebral vesicles, can be distinguished while the neural groove is still completely open~~


	\|-
	~~\| <center>21</center>~~
	~~\|  ~~
	~~\| [[Cardiac_Embryology\|Heart]] cardiogenesis - week 3 begins as paired heart tubes.~~

	\|}

			===Timeline===
			{{Week 3 Embryo Stages and Events table}}

Z8600021 at 04:19, 13 October 2015

2015-10-13T04:19:21Z

← Older revision		Revision as of 15:19, 13 October 2015
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	===Somite Development===		===Somite Development===

	[[File:Stage11 ~~sem100c~~.jpg\|stage 11 ~~Embryo~~]]		[[File:Stage11 sem100.jpg\|400px]]

			Embryo ([[Carnegie stage 11]]) SEM

	Somite initially forms 2 main components		Somite initially forms 2 main components

← Older revision		Revision as of 15:10, 17 Mayıs 2016
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	==Additional Information==		==Additional Information==
	{{Med Prac additional Information}}		{{Med Prac additional Information}}
	~~===Embryo Stages and Events===~~
	~~{\| class="prettytable"~~
	~~\| width= "50px" \|'''Day'''~~
	~~\| width= "100px" \|'''Stage'''~~
	~~\| '''Event'''~~

	\|-
	~~\| <center>15</center>~~
	\|
	\|

	\|-
	~~\| <center>16</center>~~
	~~\| [[Carnegie stage 7\|Stage 7]]~~
	\| [[Image:Stage7.jpg\|120px\|left]] '''Primitive node''' (Hensen's node, primitive knot) The small circular region located at the cranial end of the primitive streak, where gastrulation occurs, and is a controller of this process. The second role is to act as an initial generator of the left-right (L-R) body axis.

	\|-
	~~\| <center>17</center>~~
	~~\|  ~~
	~~\|  ~~

	\|-
	~~\| <center>18</center>~~
	~~\| [[Carnegie stage 8\|Stage 8]]~~
	~~\| [[Image:Stage8_human.jpg\|120px\|left]] [[Neural System Development\|Neural]] neurogenesis, neural groove and folds are first seen~~

	\|-
	~~\| <center>19</center>~~
	~~\|  ~~
	~~\| [[Image:Stage8_SEM1.jpg\|120px\|left]]~~

	\|-
	~~\| <center>20</center>~~
	~~\| [[Carnegie stage 9\|Stage 9]]~~
	~~\| [[File:Stage9_bf1.jpg\|200px\|link=Carnegie stage 9]] [[Somitogenesis\|Musculoskeletal]] somitogenesis - first somites form and continue to be added in sequence caudally~~

	~~[[Neural System Development\|Neural]] - three main divisions of the brain, which are not cerebral vesicles, can be distinguished while the neural groove is still completely open~~


	\|-
	~~\| <center>21</center>~~
	~~\|  ~~
	~~\| [[Cardiac_Embryology\|Heart]] cardiogenesis - week 3 begins as paired heart tubes.~~

	\|}

			===Timeline===
			{{Week 3 Embryo Stages and Events table}}