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الهضم و التربية الغذائية
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ملخص درس مسار الأغذية للسنة الثالثة اعدادي

ملخص درس مسار الأغذية للسنة الثالثة اعدادي

كاتب(ة) الموضوع✔ حليمة بن تومرت

محتويات

المستوى الدراسي: الثالثة اعادادي.

الدورة: الدورة الأولى.

المادة: علوم الحياة و الأرض.

الدرس : تلخيص درس الهظم و التربية الغذائية - مسار الأغذية.

ملخص درس مسار الأغذية للسنة الثالثة اعدادي

ملخص درس مسار الأغذية للسنة الثالثة اعدادي

مسار الأغذية :

بداية من الفم تتعرض الأغذية لنوعين مختلفين من الهضم هما الهضم الميكانيك و الهضم الكيميائي, تم تتجه الى المعدة عبر المرئ لتتعرض مجددا الى الهضم الميكانيك بواسطة عضلاتها و الهضم الكيميائي بواسطة العصارات الهاضمة , و بعد هدا تتجه الى المعي الدقيق حيت سيتم هضم ما تبقى منها و امتصاصها , تم تتجه الأغذية التي لم تهضم بعد الى المعي الغليظ حيت سيتم طرحها من المخارج على شكل بول أو غائط.

ظاهرة الامتصاص:

تحدث ظاهرة الامتصاص على مستوى المعي الدقيق, حيت تنتقل مواد القيت الى الدم أو اللمف عبر جداره الداخلي الدي يحتوي على مجموعة من الطييات المسماة بالصمامات الناقصة و المكسوة بالخملات المعوية المكونة بدورها من خملات مجهرية تعتبر هي المسؤولة عن هده الظاهرة.

يبحث الأشخاص أيضًا عن

تمارين في درس مسار الأغذية للسنة الثالثة اعدادي

خطاطة درس مسار الأغذية للسنة الثالثة اعدادي

درس مسار الأغذية للسنة الثالثة اعدادي

تعاريف درس مسار الأغذية للسنة الثالثة اعدادي

أحدث المواضيع

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