لماذا لانستطيع رفع اصبع البنصر لوحده ؟

لماذا لانستطيع رفع اصبع البنصر لوحده ؟

البنصر هو الإصبع الرابع من أصابع اليد وتقع بين الوسطى والخنصر. ويرجع السبب في عدم قدرتنا على رفعه وحده الى انه غير مستقر عصبيا . وانما مرتبط بالا صبعين اللذان ال جانبيه الي حد كبير , وخصوصا اصبع الوسطي. ولكن يتفاوت الناس في مقدار قدرتهم علي تحريك البنصر بشكل مستقل عن الأصابع المجاورة له

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