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Chpt 3: E
Pig Disection: Digestive & Respiratory
10
Biology
12th Grade
02/01/2013

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Term
Propria Mucosae
Definition
Layer of connective tissue next to the muscularis mucosae; it contains blood vessels that lymphatic vessels
Term
Muscularis Mucosae
Definition
Thin layer of longitudinal and circular smooth muscle fiber lying internally next to the submucosa
Term
Serosa
Definition
Thin layer of squamos epithelium supported by connective tissue
Term
Longitudinal Muscle Layer
Definition
Layer of small intestine made of smooth muscle fibers
Term
Circular Muscle Layer
Definition
Layer of the small intestine forming a tight spiral whose coils lie close to the transverse plane of the intestine; helps in making a churning movement in the intestine
Term
Lymph Nodes
Definition
Large; deep-staining masses of lymphocytes
Term
Mucosa
Definition
Most complex layer of the intestine; subdivided into three layers
Term
Intestinal Glands
Definition
Between the villi the mucosal epithelium dips deeply into the propria mucosae to form these; intestinal enzymes are secreted here
Term
Goblet Cells
Definition
Cells of the mucosal epithelium that secrete mucus which lubricates the food within the intestinal lumen
Term
Villi
Definition
Finger-like projections that extend into the lumen of the intestine
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