Mammalian teeth have developed so that they are specialized to an animal's diet and enable the mastication, cutting and tearing of food. This is part of the mechanical aspect of digestion while enzymes perform the chemic... More »

During the first two stages of photosynthesis, enzymes break up the electrons from water molecules to yield oxygen gas and hydrogen ions. When photosynthesis reaches the third stage, or Calvin cycle, enzymes assist in th... More »

The production of bile makes the liver an important organ within digestion, as it emulsifies fat, much like dish soap acts on fat and grease to split it into smaller pieces. This process makes it much easier for the body... More »

The process of digestion begins in the mouth during mastication, where chewing breaks food into small bits and mixes it with saliva. In the small intestine, nutrients are absorbed through the lining of the intestinal wal... More »

The main function of the gullet, otherwise known as the esophagus, is to transfer food and drinks from the mouth to begin digestion in the stomach, according to University of Maryland Medical Center. The muscles of the e... More »

Anthropologists believe the probable function of wisdom teeth is a response to the coarse diet that earlier humans had. Foods such as roots and nuts required more chewing before swallowing. More » states that oxygen plays an important role in the body’s breathing and metabolic processes. It is absorbed by the blood stream in the lungs and transported to the cells where a change process occurs. More »