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BIO 256 Lab 1 Assignment (Part A) - Knowledge Review On Gastrointestinal Tract Organs
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lOMoARcPSD|3013804Lab 1 Assignment (Part A) - Knowledge
Review On Gastrointestinal Tract Organs
Anatomy and physiology 4 (Chamberlain
University)
, lOMoARcPSD|3013804
Part A
Reviewing Your Knowledge pg. 593-596
A. Layers of the Gastrointestinal Tract
Name the layers of the GI tract that are described.
1. The layer that contracts to churn food or move food along. Muscularis
2. Layer consisting of a membrane that lines a body cavity that opens to the exterior;
overlays smooth muscle. Mucosa
3. Areolar connective tissue layer located deep to the mucosa. Submucosa
4. A serous membrane that is the external layer of a GI tract organ. Serosa
B. Gastrointestinal Tract Organs
Write the name of the term that is described.
1. Its only function is propulsion. Esophagus
2. A continuous digestive tube from the mouth to the anus. Alimentary Canal
3. Conducts both air and food. Pharynx
4. Primary site of nutrient absorption; is composed of 3 sections. Small Intestine
5. Section of small intestine that receives bile, pancreatic secretions, and food from the
stomach. Duodenum
6. Churns food and begins protein digestion. Stomach
7. Has two sphincters that control elimination of feces from the body. Anus
8. Has regions called the cardia, fundus, body, and pylorus. Stomach
9. Has regions called the cecum, colon, rectum, and anal canal. Large Intestine
10. Receives secretions from salivary glands; mastication occurs here. Mouth
C. Gastrointestinal Tract Organs and Associated Structures
Write the name of the organ that is described.
1. Finger-like extensions increasing surface area in the small intestine. Villi
2. Folds in the gastric mucosa. Rugae
3. Permanent deep ridges in the small intestine mucosa. Circular Folds
4. Sphincter valve between the stomach and duodenum. Pyloric Sphincter
5. Serous membrane that lines the abdominal wall. Parietal Peritoneum
6. Serous membrane that covers the abdominal organs. Visceral Peritoneum
7. Sphincter that connects the small and large intestine. Ileocecal Sphincter
8. Fluid that begins digestion of carbohydrates. Saliva
9. Bony plate between the mouth and nose. Hard Palate
10. Forms a brush border; extension of epithelial cell plasma membrane. Microvilli
11. Keeps food and fluids from going up into the nasopharynx. Uvula
12. Area between the lips and teeth. Gums
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