وفر 50٪ من خلال الاشتراك السنوي في مجرة واحصل على تصفح لا محدود لأفضل محتوى عربي على الإنترنت.

اشترك الآن

تمت عملية الاشتراك بنجاح

إغلاق

عذراً، عذرا،أنت مشترك مسبقاً بالنشرة البريدية

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عذراً، هناك مشكلة في البريد الالكتروني

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الطب

وريد |  Vein

26 أبريل 2020


هو من الأوعية الدموية التي يعود بها الدم محمل بغاز ثاني اوكسيد الكربون من أجهزة وأجزاء الجسم الى القلب، الوريد اقل ثخانة من الشريان وتشريحه النسيجي لايحوي خلايا عضلية مثل الشريان فهو يتحمل ضغط أقل ويعتمد جريان الدم فيه والعودة الى القلب على حركة الجسم.