BGDA Practical 7 - Week 7 - Revision history

Z8600021 at 10:52, 12 Mayıs 2019

2019-05-12T10:52:40Z

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	[[Neural System Development]] - {{meninges}} develop with the appearance of the dura mater.{{#pmid:15478101\|PMID15478101}}		[[Neural System Development]] - {{meninges}} develop with the appearance of the dura mater.{{#pmid:15478101\|PMID15478101}}


			{{BGDA Practical 6 - Week 7 Interactive}}

Z8600021 at 05:39, 12 Mayıs 2019

2019-05-12T05:39:57Z

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	* Ossification - bones form by ~~[[E#~~endochondral ossification~~\|endochondral ossification]]~~ and throughout embryo replacement of cartilage with bone (week 5 onward).		* Ossification - bones form by {{endochondral ossification}} and throughout embryo replacement of cartilage with bone (week 5 onward).
	** mesenchyme condensation -> cartilage development -> cartilage death -> vascularisation -> bone development (primary ossification)		** mesenchyme condensation -> cartilage development -> cartilage death -> vascularisation -> bone development (primary ossification)

Z8600021: /* Introduction */

2018-04-17T02:42:25Z

Introduction

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	{{BGDALab7}}		{{BGDALab7}}

	Key Events of Human Development during the seventh week ~~(week 7)~~ following fertilization or clinical {{GA}} week 9.		Key Events of Human Development during the seventh week following fertilization or clinical {{GA}} week 9.

	<gallery>		<gallery>

Z8600021 at 02:41, 17 April 2018

2018-04-17T02:41:41Z

← Older revision		Revision as of 13:41, 17 April 2018
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	==Neural==		==Neural==
	[[Neural System Development]] - {{meninges)) develop with the appearance of the dura mater.{{#pmid:15478101\|PMID15478101}}		[[Neural System Development]] - {{meninges}} develop with the appearance of the dura mater.{{#pmid:15478101\|PMID15478101}}

Z8600021 at 02:38, 17 April 2018

2018-04-17T02:38:40Z

← Older revision		Revision as of 13:38, 17 April 2018
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	<gallery>		<gallery>
	File:Stage18_bf1c.jpg\|Stage 18		File:Stage18_bf1c.jpg\|Stage {{CS18}}
	File:Stage19_bf1c.jpg\|Stage 19		File:Stage19_bf1c.jpg\|Stage {{CS19}}a
	</gallery>		</gallery>

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	==Neural==		==Neural==
	[[Neural System Development]] ~~duramater appears <ref name=~~PMID15478101~~><pubmed>15478101</pubmed></ref>~~		[[Neural System Development]] - {{meninges)) develop with the appearance of the dura mater.{{#pmid:15478101\|PMID15478101}}


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	See also the 1914 Historic description of a [[Paper_-_The_Anatomy_of_a_17.8_mm_Human_Embryo\|17.8 mm Human Embryo]] that from external appearance is approximately a Stage 19 human embryo.		See also the 1914 Historic description of a [[Harvard Collection]] [[Paper_-_The_Anatomy_of_a_17.8_mm_Human_Embryo\|17.8 mm Human Embryo]] that from external appearance is approximately a Stage {{CS19}} human embryo.
	~~[[Paper_-_The_Anatomy_of_a_17.8_mm_Human_Embryo\|1914 Human Embryo 17.8 mm]] [[Harvard Collection]]~~
	<gallery>		<gallery>
	File:Thyng1914_fig01.jpg\|Fig 1. External view		File:Thyng1914_fig01.jpg\|Fig 1. External view

Z8600021: /* Limb Development */

2017-05-16T00:29:38Z

Limb Development

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	Digits - hand and foot "paddles", death (apoptosis) of cells between digits continues.		Digits - hand and foot "paddles", death (apoptosis) of cells between digits continues.
	{\|		{\|
	! Human Digital rays		! Human Digital rays (week 7)
	! Mouse apoptosis		! Mouse apoptosis
	\|-		\|-

Z8600021: /* Limb Development */

2017-05-16T00:28:58Z

Limb Development

← Older revision		Revision as of 11:28, 16 Mayıs 2017
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	! Mouse apoptosis		! Mouse apoptosis
	\|-		\|-
	\| [[File:ME28 002.jpg\|~~200px~~]]		\| [[File:ME28 002.jpg\|300px]]
	\| [[File:Mouse_interdigit_apoptosis_01.jpg\|~~200px~~]]		\| [[File:Mouse_interdigit_apoptosis_01.jpg\|300px]]
	\|}		\|}


	* Ossification - bones form by [[E#endochondral ossification\|endochondral ossification]] and throughout embryo replacement of cartilage with bone (week 5 onward).		* Ossification - bones form by [[E#endochondral ossification\|endochondral ossification]] and throughout embryo replacement of cartilage with bone (week 5 onward).

Z8600021: /* Limb Development */

2017-05-16T00:20:53Z

Limb Development

← Older revision		Revision as of 11:20, 16 Mayıs 2017
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	===Limb Development===		===Limb Development===
			Digits - hand and foot "paddles", death (apoptosis) of cells between digits continues.
	* Digits - hand and foot "paddles", death (apoptosis) of cells between digits continues.		{\|
	[[File:Mouse_interdigit_apoptosis_01.jpg\|200px]]		! Human Digital rays
			! Mouse apoptosis
			\|-
			\| [[File:ME28 002.jpg\|200px]]
			\| [[File:Mouse_interdigit_apoptosis_01.jpg\|200px]]
			\|}

	* Ossification - bones form by [[E#endochondral ossification\|endochondral ossification]] and throughout embryo replacement of cartilage with bone (week 5 onward).		* Ossification - bones form by [[E#endochondral ossification\|endochondral ossification]] and throughout embryo replacement of cartilage with bone (week 5 onward).

Z8600021: /* Lip and Palate */

2017-05-15T02:51:32Z

Lip and Palate

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	===Lip and Palate===		===Lip and Palate===
	[[File:Stage18 em01.jpg\|400px]][[File:Stage18 em11.jpg\|400px]]		Ventral view of head showing upper lip, maxilla and nasal region during week 7.
			{\|
	~~Ventral view of head showing upper lip, maxilla and nasal region (~~Stage ~~18)~~		! Stage 18
			\|-
			\| [[File:Stage18 em01.jpg\|400px]]
			\| [[File:Stage18 em11.jpg\|400px]]
			\|-
			! Stage 19
			\|-
			\| [[File:Stage19 em01.jpg\|400px]]
			\| [[File:Stage19 em11.jpg\|400px]]
			\|}

	==Neural==		==Neural==

Z8600021: /* Musculoskeletal Development */

2017-05-15T02:50:02Z

Musculoskeletal Development

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	* '''endochondral ossification''' - (Greek, endon = within) The developmental term used to describe the process of the replacement of the embryonic body skeleton "template" formed by cartilage with bone. The osteoblasts are the bone-forming cells. The other bone formation process is intramembranous ossification.		* '''endochondral ossification''' - (Greek, endon = within) The developmental term used to describe the process of the replacement of the embryonic body skeleton "template" formed by cartilage with bone. The osteoblasts are the bone-forming cells. The other bone formation process is intramembranous ossification.
	* '''intramembranous ossification''' - The term used to describe the process of replacement of a membranous mesenchyme with bone by osteoblasts (bone-forming cells). Mesenchymal cells (osteoprogenitor cells) differentiate into osteoblasts at the initial sites of ossification (ossification centre). Occurs in skull (jaw, cranial vault) and clavicle. The majority of the skeleton is formed by an alternative process of bone formation on a cartilaginous template, endochondral ossification.		* '''intramembranous ossification''' - The term used to describe the process of replacement of a membranous mesenchyme with bone by osteoblasts (bone-forming cells). Mesenchymal cells (osteoprogenitor cells) differentiate into osteoblasts at the initial sites of ossification (ossification centre). Occurs in skull (jaw, cranial vault) and clavicle. The majority of the skeleton is formed by an alternative process of bone formation on a cartilaginous template, endochondral ossification.

			===Lip and Palate===
			[[File:Stage18 em01.jpg\|400px]][[File:Stage18 em11.jpg\|400px]]

			Ventral view of head showing upper lip, maxilla and nasal region (Stage 18)

	==Neural==		==Neural==