The Digestive System Of The Human Body Processes Essay

1034 Words Mar 20th, 2016 5 Pages
The digestive system consists of the organs needed to break down food, thereby giving us the nutrients we need to fuel everyday body processes. The organs that comprise this system and are a part of the alimentary canal, are the mouth, esophagus, stomach, small intestine, and the large intestines which includes the rectum and anus. The digestive system also contains accessory organs. An accessory organ is an organ that helps with digestion but is not part of the digestive tract. The accessory digestive organs are the tongue, salivary glands, pancreas, liver, and gallbladder.1 Before digestion begins we experience pre-absorptive phase responses, also known as cephalic phase responses. These responses are innate and learned physiological responses to sensory signals that prepare the gastrointestinal tract for the optimal processing of ingested food.2 Digestion begins in the mouth where physical and chemical digestion begins. Physical digestion involves the breakdown of food through chewing, mixing, tearing, grinding, maxing, or crushing with the help of the tongue. It is also in the mouth that the salivary glands are first recognized during chemical digestion. The three major salivary glands are the sublingual glands (under the tongue), submandibular glands (floor of the mouth), and the parotid glands (inside the cheeks). The salivary glands contain saliva, an enzyme mainly responsible for breaking down carbohydrates into sugar.3 Before food is sent through the…

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