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Digestive System
Medical terms and word parts relating to the Digestive System
14
Medical
Undergraduate 2
03/26/2013

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Term
Alimentary Canal
Definition
GI Tract
Term
Mastication
Definition
mechanical breakdown of food by the teeth
Term
enamel
Definition
hard covering of the teeth
Term
Dentin
Definition
located beneath the enamel. Is the main structure of the tooth.
Term
Pulp
Definition
innermost part of the tooth; contains nerve and blood vessels
Term
deglutition
Definition
swallowing
Term
papillae
Definition
Rough projections on the surface of the tongue that contain taste buds.
Term
Bilirubin
Definition
Orange-colored or yellowish pigment in bile formed principally by the breakdown of hemoglobin in red blood cells after termination of their normal lifespan.
Term
Bolus
Definition
Mass of masticated food ready to be swallowed
Term
Exocrine
Definition
Denotes a gland that secretes its product through excretory ducts to the surface of an organ or tissue into a vessel.
Term
Sphincter
Definition
Circular band of muscle fibers that constricts a passage or closes a natural opening of the body
Term
rugae
Definition
macroscopic longitudinal folds within the stomach that gradually unfold as the stomach fills
Term
chyme
Definition
semiliquid form that the bolus takes as it leaves the stomach and enters the small intestine.
Term
peristalsis
Definition
coordinated, rhythmic muscle contractions that propels food through the entire GI tract.
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