Scientific American presents Nutrition Diva by Quick & Dirty Tips. Scientific American and Quick & Dirty Tips are both Macmillan companies. Some people claim that the body can't absorb more than 20-30 grams of protein at a time. Others insist that your body utilizes all the protein you take in.
In the human digestive system, the process of digestion has many stages, the first of which starts in the mouth (oral cavity). Digestion involves the breakdown of food into smaller and smaller components which can be absorbed and assimilated into the body.he organs known as the accessory digestive glands are the liver, gall bladder and pancreas. Other components include the mouth, teeth and epiglottis. The largest structure of the digestive system is the gastrointestinal tract (GI tract).
Science Main Index. The digestive system is under control of the Autonomic Nervous System (ANS). The ANS controls body process that are not under our conscious control. This means that when we eat food, we don't need to think about how our body will digest it. The Autonomic Nervous System automatically does what needs to be done. The digestive system is also controlled by hormones released by glands in the body.