تم تعطيل الجافا سكربت. للحصول على تجربة أفضل، الرجاء تمكين الجافا سكربت في المتصفح الخاص بك قبل المتابعة.

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الرسالة: [QUOTE="apostle.paul, post: 2827465, member: 85886"] [B][B][FONT=Arial Narrow][SIZE=5]Somites[/SIZE][/FONT][/B][/B] [LEFT] [B][FONT=Arial Narrow][SIZE=5]During the fourth week the embryo is segmented. Each segment consists of a somite innervated by a segmental nerve derived from a segment of the neural tube.[/SIZE][/FONT][/B] [B][FONT=Arial Narrow][SIZE=5]A somite is divided into two parts:[/SIZE][/FONT][/B] [B][FONT=Arial Narrow][SIZE=5]a.[FONT=&quot] [/SIZE][/FONT][SIZE=5]The sclerotome is the ventro-medial part of the somite. It contains a “cavity” of loose cells. Cells from the sclerotome migrate medially to surround the notochord and neural tube and form the axial skeleton.[/SIZE][/FONT][/B] [B][FONT=Arial Narrow][SIZE=5]b.[FONT=&quot] [/SIZE][/FONT][SIZE=5][U][COLOR=DarkRed]The dermomyotome[/COLOR][/U] is the dorso-lateral part of the somite. [U][COLOR=DarkRed]Cells from the dermomyotome migrate laterally and, as its name implies, gives rise to (i) skeletal muscle[/COLOR][/U] and (ii) the dermis of the skin. The concept of the myotome in gross anatomy is an embryological concept. Each anatomical myotome is derived from the embryological dermomyotome that is innervated by a segmental nerve and forms a goroup of skeletal muscle cells and the dermis of the corresponding segment of ectoderm[/SIZE][/FONT][/B][/LEFT] [RIGHT][B][FONT=Arial Narrow][SIZE=5]ششرحتها اربع مرات ولا اشرحها تانى[/SIZE][/FONT][/B] [B][FONT=Arial Narrow][SIZE=5]. [/SIZE][/FONT][/B][/RIGHT] [/QUOTE]

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