The journey of food digestion begins in the mouth.Food is mechanically broken down by the teeth.Salivary glands release enzymes that help break down starches.The food is formed into a small ball called a bolus.The bolus passes through the pharynx.The esophagus uses wave-like contractions called peristalsis to push food toward the stomach.في المعدة، يتم خلط الطعام مع العصارات الحمضيةتقوم الإنزيمات بتحويل الطعام إلى سائل كثيف يسمى الكيموسثم ينتقل الكيموس إلى الأمعاء الدقيقةتساعد العصارة الصفراوية من الكبد وإنزيمات البنكرياس في تكسير الطعاميتم تكسير الدهون والبروتينات والكربوهيدرات إلى جزيئات صغيرةوهكذا تصبح المواد الغذائية جاهزة للامتصاصIn the small intestine, tiny finger-like projections called villi increase the surface area for nutrient absorption.Blood vessels within the villi transport absorbed nutrients throughout the body.Digested nutrients pass through the intestinal wall and into the bloodstream.Undigested material moves into the large intestine, where water and minerals are absorbed.The large intestine absorbs water and important minerals to maintain the body's balance.Finally, waste materials collect in the rectum for elimination from the body.And that completes our journey through the digestive system, from the first bite of food to the final elimination of waste.Thank you for learning about digestion and absorption with Spark.E!
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