BIOD 121 (PORTAGE): MODULE 2|DIGESTION AND MACRONUTRIENTS

Digestion CORRECT ANSWER process of transforming food into basic nutrients that can be absorbed and used by the body Without the process, the nutrients we initially consume in food would be useless: CORRECT ANSWER digestion Before food even enters the mouth, a cascade of events involving the nervous system and a variety of hormones are set off based on a variety of stimulus: CORRECT ANSWER cognition, sound, odor, appearance, and taste cognition CORRECT ANSWER thoughts about food can start the flow of saliva sound CORRECT ANSWER hearing a description of the meal odor CORRECT ANSWER smells stimulate a hunger response and influence its taste appearance CORRECT ANSWER seeing the food taste CORRECT ANSWER begins as the food enters your mouth and also how it feels Once food enters the mouth it begins to break down into smaller units in both CORRECT ANSWER mechanical and chemical processes Mechanical process begins CORRECT ANSWER in the mouth with chewing peristalsis CORRECT ANSWER involuntary muscle contractions are used to move food mixtures along the tract Enzymes, acid, bile, and mucus CORRECT ANSWER chemical means the body has at its disposal to further aid in breaking down food enzymes CORRECT ANSWER proteins that catalyze (speed up) chemical reactions. They catalyze the chemical reactions required to break down food particles into smaller parts, which prepares the nutrients for absorption gastrointestinal (GI) tract CORRECT ANSWER a long hollow tube consisting of several layers of tissue that begins with the mouth and ends at the anus nutrient absorption occurs across the wall of the CORRECT ANSWER gastrointestinal (GI) tract