عنوان النشاط
the effect of digestive enzyme on some nutrient
الجهة المنظمة
جامعة الكوفة / كلية الطب البيطري/فرع الفسلجة والادوية
تأريخ الانعقاد
2017-01-09
مكان الانعقاد
كلية الطب البيطري
نبذة مختصرة
The gastrointestinal system exists primarily to convey nutrients and water into the body. In unicellular organisms, metabolic requirements can be met by diffusion or transport of substances from the environment across the cell membrane. However, the greatly increased scale of multicellular organisms, along with the fact that most such organisms are terrestrial, and thus not normally swimming in a soup of nutrients, means that specialized systems have evolved to convey nutrients into and around the body. Thus, the gastrointestinal system and liver work in concert with the circulation to ensure that the nutritional requirements of cells distant from the exterior of the body can be met.