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28 Cards in this Set
- Front
- Back
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Describe the 3 main processes of the digestive system.
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digestion: mechanical&chemical breakdown of food for the use of the body&cells.
Absorption: Passage od digestive food from the digestive tract in the cardiovascular Elimination: The expulsion of undigested food or body waste. |
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What are gastric juices?
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Secretion from the stomach lining that contain hydrochloric acid and pepsin
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What is Pepsin?
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Enzyme that digests protein.
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Where does the digestive process begin?
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The mouth
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___ is the first stage of digestion that is taking the food into the body.
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Ingestion.
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The primary function of the teeth is to...
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Break down the food.
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____ is the process of chewing, prepare the food to be swallowed.
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Mastication
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The first digestive juices are produced by...
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Saliva
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An enzyme in the saliva begins to break down the ____ in food.
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Starches & Sugars.
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The ___ forms the chewed food into a size and shape that can be swallowed.
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Tounge.
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Define Peristalisis.
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A series of invoulentary muscle contractions that move food through the digestive tract.
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In what organs does the Peristalisis Occur?
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The Sphincter
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What are the 2 functions?
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Moves food in and out through the body.
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The ___ is the muscular tube that connects the throat and the stomach.
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Esophogus
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The stomach like sac inclosed in a ____
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Muscular Wall
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The 3 tasks the stomach has in digestion are _____, ______, and _______.
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Mixing foods&Gastric gases, Storing swallowed food and liquid, and moving food into the small intestines.
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Gastric juices in the stomach contain pepsin an enzyme that breaks down what?
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Protein
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What in the stomach kills bacteria and creates an acidic environment?
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Hydrochloric Acid
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Digested foods in the stomach is converted into ____, a creamy, fluid mixture of foods and gastric juices.
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Chyme
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The pancreas produces enzymes that break down _____, ____ and _____ in food.
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Carbohydrates & fats & proteins
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Enzymes active in digestive are also secreated by glands in the intestinal what?
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Wall.
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Bile, a digestive juice produced in the liver is important in the break down & absorption of what?
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Fats.
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Where is bile stored?
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Gallbladder.
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After fats are dissolved by the bile acids they are digested by enzymes from the...
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Pancreas&The lining of the intestine.
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Three parts of an intestine?
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duodenum, jejunum, and ileum.
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Neutrients are absorbed through the inner wall of what?
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Small Intestine.
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Fingerlike Projections on the inside of the small intestine are called what?
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Villi
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Villi is lined with ____ that absorb neutrients.
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Capillaries.
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