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A&P II Chapter 26
GI
| Term | Definition |
|---|---|
| Ingestion | Introduction of food and drink into the GI tract |
| Absorption | Process of moving substances into blood or lymph |
| Mucosa | Mucous membrane that lines various body structures |
| Sphincter | Muscle that encircles a duct , tube, or oriface such that its contraction constricts the lumen and restricts movement through the tube |
| Peristalsis | Rhythmic contractions that propel material through tubes in the GI tract. |
| Adventitia | Outermost covering of an organ |
| Peritoneum | Serous sac that lines the abdominopelvic cavity and covers most of the viscera within |
| Mesentary | Fan-shaped fold of the peritoneum attaching the small intestine to the posterior abdominal wall |
| Omentum | Fold of peritoneum from the stomach to either cover the region between the liver and stomach, or extends to cover most abdominal organs on their anterior surface |
| Mechanoreceptor | Sensory receptor that responds to touch, vibration, pressure, or distortion |