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A&P II Chapter 26


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



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