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<div class='quotetop'>إقتباس(إبن النيل @ Mar 25 2007, 04:08 AM) [snapback]288002[/snapback]</div>
اقتباس:
الى الاستاذ الفاضل طارق http://www.siumed.edu/mrc/research/nutrient/gi42sg.html ( هذا احد المواقع التى توضح ما شرحته لسيادتكم ) Water An important function of both small intestine and colon is the absorption of water and electrolytes. Approximately 2000 ml of food and drink is ingested daily, and the volume of gastrointestinal secretions (salivary, gastric, biliary, pancreatic and intestinal) is about 8,000 ml daily; therefore, approximately 10 liters of fluid enters the intestine each day. Of the 8 liters secreted, about 1-1.5 liters enter as saliva, 2-3 liters are secreted by the stomach, about 2 liters enter as bile and pancreatic secretion (about 1 liter each), and about 2 liters are secreted by the small intestine. (Please note that these figures are approximate, not absolute. Volumes may vary, depending on experimental method and conditions.) Of the 10 liters which enters the gut each day, only about 1 liter passes into the colon, about 90% having been absorbed across the small intestinal epithelium. Only about 150 ml is lost in the feces daily, with the remainder being absorbed by the colon. It should be obvious that any derangement in intestinal fluid absorption would profoundly influence the balance of fluid and electrolytes in the body, and that the normal functioning of the intestines plays a significant role in regulating water and electrolyte balance. نرجو ان يتكون المعلومه اتضحت مع خالص تحياتى الاستاذ الدكتور / هشام هيبه |
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الكلمات الدلالية (Tags) |
biologyللثانوية العامة, المحذوف من الأحياء, بوابة الفارس التعليمية |
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