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34 Cards in this Set
- Front
- Back
Digestion System Function
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--Absorption --Elimination |
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Digestive Enzymes Types |
--Amylase - helps digest carbohydrates --Lipase - helps digest fats |
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Digestive Tract Wall Layers
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--Muscular Layer - between serosa & submucosa --Submucosa - 2nd innermost layer --Mucosa - innermost layer |
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Mouth
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--pulp cavity - contains nerves & vessels |
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Salivary Gland Types
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--Sublingual gland --submandibular gland |
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Pharynx
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connects mouth to esophagus |
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Esophagus |
Starts at pharynx and ends at the stomach |
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Stomach |
--made up of the body, pylorus and fundus |
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Fundus |
Upper rounded portion of stomach which can store undigested food up to an hour. May prevent diaphragm from moving downward after overeating. |
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Small Intestine
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--Jejunum - next 8 feet --Ileum - last 12 feet **Don't Jump In!! --Chyme moves into small intestine from stomach through pylorus. |
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Large Intestine Function |
Complete digestion and absorption. Absorb water, salts and some vitamins |
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Order of Digestion
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3. Transverse Colon // 4. Descending Colon 5. Sigmoid Colon |
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Digestion Accessory Organs |
--Liver --Gallbladder --Pancreas |
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Liver |
--Stores Iron, vitamins B12, A, D, E, K (fat soluble vitamins can be overdosed) |
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Gallbladder
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Membranous sac in which bile is stored and concentrated |
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Gallbladder Ducts |
--Common bile duct - drains to sm. intestines --Hepatic Duct - drains FROM liver |
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Pancreas |
situated behind the stomach and secretes pancreatic juice into sm. intestine producing digestive enzymes that secrete insulin and glucagon hormones |
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Digestive System Disorders
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--Diverticulosis / Diverticulitis --Gastroesophageal Reflux Disease (GERD) --Pyloric Stenosis |
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Colorectal Cancer |
When part of the colon is removed, the remaining colon is brought to the surface of the abdomen so stool comes out of a stoma (colostomy) into an attached receptacle instead of through the rectum |
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Crohn's Disease |
Chronic inflammatory disease of the intestines that is not contagious, and exact cause is unknown with no known cure. Believed to have a genetic component. |
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Diverticulosis |
condition of having diverticula, small pouches or sacs in the wall of the colon, most often without symptoms |
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Diverticulitis |
Inflammation or infection of the diverticula with pain, fever, chills and cramping. |
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Gastroesophageal Reflux Disease (GERD) |
occurs when cardiac sphincter (connecting the inferior esophagus to the superior portion of the stomach) does not close tightly, or reflexes inappropriately allowing gastric fluids and stomach contents to back up into the esophagus (reflux) |
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Pyloric Stenosis |
Condition that develops in some infants when pylorus gradually swells & thickens, interfering with flow of food into intestine occurring anytime between birth - 6months but most often 3 weeks after birth. Main symptom is repeated vomiting after feeding. Treatment is always with surgery (pyloromyotomy) |
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Registered Dietician |
provide patient with information about nutrition and to create diet plans that help treat and prevent disease. To obtain their RD credential they must complete and pass Commission of Dietetic Registration Test. |
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Medical Assistant Role in Nutrition |
--Assist in researching/creating education programs & materials --Complete referrals and preauthorization w/ ins companies --Support and encourage pt as they start dietary changes and promote importance of following through with appointments |
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Metabolism |
Specific enzymes are required to maintain metabolism to include amino acids, carbohydrates, vitamins and essential trace minerals. Metabolism within cells produces energy. 25% is used for normal functions (respirations, digestion, etc) and 75% of energy becomes HEAT. |
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Carbohydrates
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Main source of energy from foods we consume. Cars are sugars (simple carbs), starches (complex carbs) and fiber (cellulose) which are found in plants. Carbs are stored in body in form of glycogen |
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Proteins |
"building blocks" of body because they form the base of every living cell by breaking down proteins into amino acids |
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Fats |
(lipids) fatty acids which do not dissolve in water. Fats provide assistance in transportation of soluble fat vitamins A, D, E, and K.
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Water |
Male body has higher water composition than female because of the greater amount of muscle mass and tissue. Female body contains greater % fo fat than in the male body. |
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Vitamins
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--Liver stores the fat soluble Vitamins A, D, E, & K |
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Minerals
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Inorganic elements that are neither animal or plant in origin and are found throughout body but mainly in bones and teeth. They assist with functions of the enzymes and only very small amounts are needed. They do not supply calories or energy, but are necessary for the body. |
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Calculating Body Mass Index
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--BMI=Weight(kg) / Height squared (meters) --BMI = Wgt(lbs) / Hgt squared (inches) X 703 |