Food is ground by teeth, tongue and saliva into tiny pieces., Swallowed pieces of food go through a small passage., Pieces of food become smaller, Nutrients from the food are absored, Undigested food becomes faeces and stored temporarily.

لوحة الصدارة

النمط البصري

الخيارات

تبديل القالب

استعادة الحفظ التلقائي: ؟