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The Digestive & Urinary System
Digestive & Urinary System
16
Science
6th Grade
01/25/2010

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Term
Digestive System
Definition
A group of organs that break down food so that it can be used by the body
Term
Digestive Track
Definition
Main series of tube-like organs that ALL food travels through while being digested
Term
Mechanical Digestion
Definition
Breaking down food by breaking, crushing and mashing the food (chewing & peristalsis)
Term
Chemical Digestion
Definition
Breaking down food with chemicals
Term
Enzymes
Definition
Chemical that breaks food into smaller particles the body can use (nutrients)
Term
Esophagus
Definition
a long straight tube that uses peristalsis to move the food into the stomach
Term
Stomach
Definition
a muscular, saclike, digestive organ attached to the lower end of the esophagus & continues the mechanical digestion of the food. The stomach also produces enzymes & acid
Term
Pancreas
Definition
an oval organ located between the stomach & small intestine & makes fluids that protect the small intestine.
Term
Small Intestine
Definition
a muscular tube about 2.5cm in diameter covered in villi, nutrient-absorbing cells
Term
Liver
Definition
a large, reddish brown organ that makes bile, stores nutrients & breaks down toxins
Term
Gallbladder
Definition
a small saclike organ where bile is temporarily stored
Term
Large Intestine
Definition
the organ that stores, compacts & then eliminates indigestible material from the body
Term
Mouth
Definition
Digestion begins in the__________
Term
&Incisor Canine teeth
Definition
__________ - are found in the front of the mouth & are used for shredding food
Term
Premolars & molars
Definition
___________ - are found on the back of the mouth & are used for grinding food
Term
Saliva
Definition
__________ - liquid in the mouth made by salivary glands contains an enzyme that begins the digestion of carbohydrates (sugar)
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