FOOD20003 Lecture Notes - Lecture 2: Pancreatic Juice, Gastric Acid, Pylorus
21 Jul 2018
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Document Summary
Nutrients are supplied via the blood of the circulatory system. Blood contains nutrients absorbed from our food by the actions of our elaborate and efficient digestive system. The digestive function involves the mechanical and chemical breakdown of food, extraction of nutrients, and breakdown of macronutrients. Absorption is the transfer of nutrients from the lumen of the small intestine to blood or lymphatic capillaries surrounding the digestive tract. Breathing - carbon dioxide that comes from chemical reactions in body. Bile - chemical coming out of liver goes into intestine. The gi tract is the flexible muscular tube from mouth to anus. The mouth is the beginning of the digestive system. Digestion in the mouth involves mastication (chewing), the stimulation of taste buds and swallowing. After swallowing, the food is called a bolus. The oesophagus is the tube that leads the bolus to the stomach. The stomach adds juices and grinds the bolus into chyme (semi liquid)
