First, I started with the digestive system in like manner as Mr. Schwartz. For life on earth, all living organism rely on some form of nourishment to sustain themselves. Interestingly, our bodies start digesting the moment scent of food enters our nostrils. Hence, this activates our salivary glands that contain enzymes to help break down the food we chew. A digestive system is a group of organs working together to convert food into energy and basic nutrients to feed the entire body. For instance, food passes through the gastrointestinal tract, a long tube inside the body. The GI tract is made up in fact of the oral cavity, pharynx, esophagus, stomach, small intestines, and large intestines.
In addition, there are several important accessory organs that help your body to digest food but do not have food pass through them. These organs include the teeth, tongue, salivary glands, liver, gallbladder, and pancreas. Finally, to achieve the optimal goal of providing energy and nutrients to the body there are six major functions that take place in the digestive system.
- Ingestion of food
- Secretion of fluids and digestive enzymes
- Mixing and movement of wastes through the body
- Digestion of food into smaller pieces
- Absorption of nutrients
- Excretion of wastes