Digestive and Excretory Systems
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| digestive system | body system that breaks down food so the body can use the nutrients
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| incomplete digestive system | a digestive system with a sac-like form, with single opening into which the food enters and from which undigested food remnants exit; example - hydra
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| complete digestive system | digestive system consisting of a digestive tract and two body openings (mouth and anus)
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| mechanical digestion | Physical breakdown of large pieces of food into smaller pieces
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| chemical digestion | Process by which enzymes break down food into small molecules that the body can use
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| esophagus | A muscular tube that connects the mouth to the stomach.
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| saliva | digestive juice produced by salivary glands
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| small intestine | in the digestive system, the long muscular tube where most digestion takes place
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| stomach | the pouch-like body part below the esophagus, which stores and processes chewed food
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| anus | opening through which undigested food remnants exit a digestive system
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| liver | organ that produces bile, stores glycogen, and removes toxins from the body
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| kidneys | paired organs that clean the blood, producing urine from waste
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| excretory system | the system that removes metabolic wastes from the body
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| large intestine | in the digestive system, the long organ that removes excess water from undigested food
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| mouth | an opening through which food enters a digestive system
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| bladder | organ that stores liquid waste before it leaves the body; the bladder can stretch to hold about a pint of urine
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| enzymes | Catalysts for chemical reactions in living things
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| stomach acid | Breaks down proteins, breaks them down into sugar and acids
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Created by:
kmaddix
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