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JMT Digestive System
| Question | Answer |
|---|---|
| Peristalsis | Rhythmic, wavelike, involuntary movement. |
| Pharynx | throat |
| bolus | food that is chewed and mixed with saliva |
| rugae | mucus membrane of the stomach that contains folds |
| villi | fingerlike projections |
| hydrochloric acid | kills bacteria, changes pepsinogen into pepsin |
| chyme | food mixed with gastric juices |
| Duodenum | First 9-10 inches of the small intestine |
| Esophagus | Muscular tube dorsal to the trachea, pathway for food |
| Function of capillaries contained in the Villi | Absorb digested nutrients and carry them to the liver |
| Produces cholesterol | Liver |
| What do Lacteals do? | Absorb most of digested fats and carry them to the thoracic duct which release them to the circulatory system |
| Pancreas | Produces pancreatic juices, insulin and glucagon |
| Insulin and glucagon | regulate blood glucose levels, |
| Bile | emulsifies fat, stored in the gallbladder, produced in the liver |
| Heparin | Produced by the liver, prevents clotting of the blood |
| Fibrinogen and Prothrombin | Produced by the liver, aid in clotting of the blood |
| Vitamin K | Synthesized in the large intestine, aid in clotting |
| Absorption of water and remaining nutrients | Large intestine |
| What Vitamins are synthesized and absorbed in the large intestine | Some B complex vitamins |
| Uvula | Prevents food from entering the nasopharynx |
| The three salivary glands | Sublingual, submandibular, and Parotid |
| Where does the digestive process start? | In the mouth |
| The three sections of the small intestine in order. | Duodenum, Jejunum and Ileum |
| What section of the small intestine is longest? | Ileum then Jejunum then Duodenum |
| Detoxifies substances such as alcohol and pepticides | Liver |
| Located under the liver | Gallbladder |
| Located behind the stomach | Pancreas |
| Storage area for indigestables and waste | The rectum |
| Parts of the colon in order | Ascending, transverse, descending, sigmoid |
| Anus | The final waste product is expelled |
| Parts of the Alimentary Canal | Mouth, tongue, teeth, tongue, hard and soft palate,salivary glands, pharynx, esophagus, stomach, small intestine and large intestine |
| Bony structure that forms the roof of the mouth | Hard palate |
| Separates mouth from nasal cavities, posterior to hard palate | Soft palate |
| Amylase | Enzyme secreted in the mouth begins break down of carbohydrates |
| Prothrombin | Produced by the liver, aids in clotting of blood |
| Heparin | Produced by the liver PREVENTS blood from clotting |
| Fibrinogen | Produced by the liver, in the clotting of blood |
| What section of the large intestine is connected to the ileum? | Cecum |
| The cecum contains a small projection called the? | Appendix |
| What section is longer the small intestine or large intestine? | Small approx. 20feet, large is approx 5 feet |
| Sugar that is the main source of energy in the body | Glucose |
| Sugar that is stored in the liver, broken down to glucose for energy | Glycogen |
| Hormone produced by the Pancreas, triggers a rise in blood sugar levels | Glucagon |
| What does the digestive systme produce to aid in clotting? | Liver produces Fibrinogen and Prothrombin, Large intestine synthesizes Vitamin K |
| How does pepsinogen change to pepsin | Hydrochloric acid, produced by the parietal cells activates the pepsinogen to become pepsin |
| Why would the inside of stomach appear smooth? | Because the rugae has disappeared to allow the stomach to increase in size |
| What is the name of the sphincter between the stomach and the esophagus? | Esophogealgastric sphincter |
| What is the name of the sphincter between the stomach and the duodenum? | Pyloric sphincter |