الصحة ورعايتها

ماهى اكبر عظمة فى جسم الانسان وما هى اصغر عظمه

Encyclopedia of Knowledge

اطول عظمه فى جسم الانسان ، اقصر عظمه فى الجسم

ماهى اكبر عظمة فى جسم الانسان وما هى اصغر عظمه

اطول عظمة في جسم الانسان :
عظم الفخذ هي أطول وأقوي عظمة في جسم الإنسان. يصل طولها إلي 48 سنتيمتر وقطر يصل إلي 2.34 سنتيمتر وتتحمل حتي 30 مرة قدر وزن الإنسان. ويعزي قوة العظمة نتيجة لتكون جزء كبير منها من الخلايا العظمية المضغوطة أو الكثيفة. ويوجد بعطمة الفخذ مفصلين، مفصل الكرة والفراغ الكأسي مع الحوض، ومفصل رزي عند الركبة.
اقصر عظمة في جسم الانسان :

عظمة الرِّكاب هي أصغر عظمة في الهيكل العظمي البشري وهي إحدى عظيمات السمع الثلاثة الموجوة ضمن تجويف الأذن الوسطى، حيث تعمل على توصيل الصوت للدماغ. تكون مرتبطة بالسندان الذي يتصل بالمطرقة والتي بدورها تكون متصلة بالغشاء الطبلي.

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