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digestion terms
chapter 5 digestion system
Question | Answer |
---|---|
Digestion | Mechanical and chemical process that breaks foods down to release nutrients in forms the body can absorb for use. |
Ptyalin | Enzyme found in saliva |
Peristalis | muscles of the esophagus contract and relax, creating a series or wavelike movements that force the food into the stomach |
Gastric juice | acids and enzymes produced by the stomach that help food break down chemically. |
Enzyme | Specail proteins that help chemical reactions take place. |
Pepsin | Enzyme produced in the stomach |
Villi | Little fingerlike projections in the small intestine that absorb nutrients from the chyme mixture. |
Anemia | When not enough iron in present in the body. characterized by lack of energy, weakness, shortness of breath, and cold hands and feet. |
Carbohydrates | First nutrients that break down chemically. |
Fats | concentrated source of energy as well as insulation for the body. contains 9 calories per gram. |
Malnutrition | Faulty or inadequate nuitrition. |
Oxidation | when glucose in cells combines with oxygen to produce energy and heat. |
RDA | (recommended dietary allowances) amount of nutient needed by 98% of the people in a given age or gender group. |
Basal matabolism | Minimum amount of energy needed to maintain body processes. |
Chyme | Churned foods in the stomach turn into a thick liquid call; |
Metabolism | using nutrients in chemical reactions that provide energy for vital processes and activities in the body. |
Pancreas | Organ that gets worn out and fails to secrete enough juice when we consume too many carbs or sugary foods. |
Calorie | Amount of energy needed to raise the temp of 1 kilogram of water 1 degree Celsius. |
Glucose | sugar your body makes from foods that is transferred throughout your body by your blood stream. |
Glycogen | the storage from glucose. |
Vitamins | needed in small amounts and help regulated many vital processes. |
Minerals | these help the body work properly. |
Salivary glands | Secrete saliva into the mouth for digestion. |
Esophagus | Tube that connects your mouth to your stomach and acts as a tunnel for food to travel and digest. |
Liver | produces bile that is used in digestion. |
Gallbladder | Stores bile. |
Trachea | windpipe. |
Cardiac sphincter | small flap at the end of the esophagus acting as a door to let in foods to the stomach and not foreign objects. |
Small intestine | food travels here after the stomach. absorbs nutrients with its villi. |
Large intestine | Food moves here after traveling through the small intestine. extracts wastes. |
Automatic process | processes in the body in which happen by itself. |
Mechanical digestion. | chewing is a form of; |
Chemical digestion | stomach turning food into chyme is a form of; |