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

الرد على الموضوع

الرسالة: [QUOTE="kimo14th, post: 244145, member: 2505"] وانا اتصفح الموقع العلمى الخاص بمراحل نمو الجنين نجد فعلا ان العظم يبدا متاخرا فى النمو كما نرى [url]http://www.visembryo.com/baby/18.html[/url] [FONT=Trebuchet MS, Geneva, Arial, Helvetica, SunSans-Regular, sans-serif][SIZE=-3][COLOR=white] [/COLOR][/SIZE][/FONT][COLOR=Blue][B][FONT=Helvetica, Geneva, Arial, SunSans-Regular, sans-serif][SIZE=3]Spine[/SIZE][/FONT][FONT=Trebuchet MS, Geneva, Arial, Helvetica, SunSans-Regular, sans-serif][SIZE=3] Ossification of the skeleton begins ثم نجد فى المرحله 22 [url]http://www.visembryo.com/baby/22.html[/url] [/SIZE][/FONT][/B][B][FONT=Trebuchet MS, Geneva, Arial, Helvetica, SunSans-Regular, sans-serif][SIZE=3] [/SIZE][/FONT][FONT=Helvetica, Geneva, Arial, SunSans-Regular, sans-serif][SIZE=3]Limbs[/SIZE][/FONT][FONT=Trebuchet MS, Geneva, Arial, Helvetica, SunSans-Regular, sans-serif][SIZE=3] Fingers lengthen while distinct grooves (digital rays) form between the fingers, which also lengthen as the hands approach each other across the abdomen. Feet approach each other, but are still fan-shaped and the toe digits are still webbed. [/SIZE][/FONT][FONT=Trebuchet MS, Geneva, Arial, Helvetica, SunSans-Regular, sans-serif][SIZE=3]Primary ossification centers appear in the long bones, directing the replacement of cartilage by bone. This process usually begins in the upper limbs. Fingers overlap those of opposite hand, and the digits of the fingers fully separate. Feet lengthen and become more defined. [/SIZE][/FONT][/B][/COLOR][FONT=Helvetica, Geneva, Arial, SunSans-Regular, sans-serif][SIZE=3][COLOR=Blue]Spine, Skeleton, and Muscles[/COLOR][/SIZE][/FONT] [COLOR=Blue][B][FONT=Trebuchet MS, Geneva, Arial, Helvetica, SunSans-Regular, sans-serif][SIZE=3] no comment [/SIZE][/FONT][/B][/COLOR] [/QUOTE]

التحقق