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22 Cards in this Set
- Front
- Back
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Digestive system functions |
digestion and absorption |
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2 divisions of the digestive system |
digestive tract and accessory organs |
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accessory organs |
teeth, tongue, salivary glands, liver, gall bladder and pancreas |
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Ingestion |
Process of eating |
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Propulsion |
Moving food along digestive tract by perostalsis |
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Perostalsis |
Process of muscles contracting to move food down the tubes in the digestive tract |
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Secretion |
Making of digestive enzymes and other substances to liquefy, adjust pH and chemically break down food |
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Mechanical digestion |
Process of breaking down food into smaller pieces begins with chewing, continues with turning in the stomach, ends with turning in the small intestines |
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The name for food once it's in the small intestines |
Chyme |
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Chemical digestion |
The process of chemically breaking down food into smaller molecules, carried out by enzymes in the stomach and small intestine |
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Absorption |
Movement of molecules from digestive tract to blood and lymph vessels that bring nutrients in for the body |
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Defecation |
Process of eliminating undigested material through anus |
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Four sphincters |
Anal, cardiac, pyloric and sphincter of oddi |
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Anal sphincter |
Opens and closes to control evacuation of feces from anus |
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Cardiac sphincter |
Door between esophagus and stomach, open so food can be swept into stomach by rhythmic peristaltic waves |
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Pyloric sphincter |
Door between stomach and duodenum usually is closed, opens only for the moment when peristaltic waves Pass over it |
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Sphincter of Oddi |
Sheath of muscle fibers that allow bile from liver and insulin from pancreas into the duodenum |
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sphincter |
Circular muscles that constricts a passage or closes a natural orifice |
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What is the mouth |
Where digestion start, teeth break down food, saliva mixes with food, tongue pushes food into pharynx |
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Esophagus |
Located near your trachea, muscular contractions called perostalsis food into stomach |
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Stomach |
Hollow organ that contains chyme, digestuin continues, cells create acid, acid breaks down food, leads food into the small intestine |
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Small intestines 3 segments |
Duidenum, jejunum and ileum |
