Label The Digestive System These digestive juices break down the food particles in the chyme into glucose, triglycerides, and amino acids. some chemical digestion of food takes place in the duodenum. absorption of fatty acids also takes place in the duodenum. the second part of the small intestine is called the jejunum, shown in figure 3. The oral cavity, or mouth, is the point of entry of food into the digestive system, illustrated in figure 1. the food consumed is broken into smaller particles by mastication, the chewing action of the teeth. all mammals have teeth and can chew their food. figure 1. digestion of food begins in the (a) oral cavity.
Function Of The Digestive System Hubpages The digestive system is made up by the alimentary canal, or the digestive tract, and other abdominal organs that play a part in digestion such as the liver and the pancreas. the alimentary canal is the long tube of organs that runs from the mouth (where the food enters) to the anus (where indigestible waste leaves). The nutrients and macromolecules present in food are not immediately accessible to the cells. there are a number of processes that modify food within the animal body in order to make the nutrients and organic molecules accessible for cellular function. as animals evolved in complexity of form and function, their digestive systems have also. Chemical digestion starts with saliva and continues into the intestines. the major enzymes involved in chemical digestion are shown in the table below. the digestive system is made up by the alimentary canal, or the digestive tract, and other abdominal organs that play a part in digestion such as the liver and the pancreas. Digestive system. a digestive system is a group of organs consisting of the central gastrointestinal (gi) tract and its associated accessory organs that break down food into smaller components so that nutrients can be absorbed and assimilated. this provides the necessary energy to sustain the body.
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