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356 Digestive and Endocrine Systems
nutrients
Digestive and Endocrine Systems
Section 35.1 The Digestive System
Skim Section 1 of the chapter. Write two questions that come to
mind from reading the headings and the illustration captions.
1.
2.
Use your book or dictionar y to define nutrients.
Write the correct vocabular y term in the left column for each
definition below.
process that breaks food into smaller pieces by chewing and by the
churning action of smooth muscles in the stomach and small intestine
longest part of the digestive tract, which connects the stomach and
the large intestine and where digestion is completed
muscular tube that connects the pharynx to the stomach
enzyme found in saliva that begins chemical digestion by breaking
down starches into sugars
fingerlike structures in the small intestine through which chemical
digestion is completed and most nutrients from food are absorbed
enzyme in the stomach that helps digest proteins
largest internal organ of the body; produces bile, which helps to
break down fats
action of digestive enzymes in breaking down large molecules of
food into smaller molecules that can be absorbed by cells
rhythmic contraction of smooth muscles that moves food through
the digestive tract
end portion of the digestive tract, which includes the colon, rectum,
and appendix
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Vocabulary
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Review
Vocabulary