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Part One Food Habits: A Lifestyle Choice
Reading for Meaning
Make a list of everything you already
know about the topic of this chapter.
As you read the chapter, check off the
items that the chapter covers.
Concept Organizer
Use the flowchart diagram to identify the key parts of the
digestive process. Identify concepts relevant to each part of
the process.
Chapter 3 How Nutrients Become You
71
he phrase “You are what you
eat” is a true statement. Food is
your body’s fuel. When you eat,
your body breaks down food and the
nutrients it contains into simpler elements.
Energy is released and nutrients are
used to help build, repair, and maintain
body cells. Then your body discards the
by-products of this process as waste.
This chapter will help you picture the
process of how your body uses food
from beginning to end.
Food, Nutrients,
and Energy
Food plays more roles than simply
satisfying hunger. The food you eat
becomes part of you. Nutrients from
food are your body’s source of fuel and
building materials.
Terms to Know
kilocalorie
digestion
enzyme
gastrointestinal (GI) tract
mastication
peristalsis
gastric juices
chyme
bile
feces
absorption
villi
metabolism
ATP (adenosine triphosphate)
food allergy
food intolerance
diarrhea
constipation
indigestion
heartburn
ulcer
gallstones
diverticulosis
Objectives
After studying this chapter, you will be able to
•
identify
the six basic nutrient groups.
• distinguish
the functions of the major
parts of the digestive system.
• summarize
the processes of
absorption and metabolism.
• analyze
how lifestyle behaviors and
food patterns can affect digestion and
absorption processes.
• recognize
the characteristics associated
with common digestive disorders.
Central Ideas
•
Consuming foods from the six nutrient
groups and good digestion are critical
for physical wellness.
•
Eating habits, emotions, food allergies
and intolerances, and physical activity
influence effective digestion.
T
•
Print out the concept organizer
at g-wlearning.com.
•
Practice key terms with
crossword puzzles, matching
activities, and e-flash cards at
g-wlearning.com.
ompanion
Web Site
Reading for Meaning
activities
help to develop your reading skills
Concept Organizer
challenges
students to present chapter
information in a coherent manner
Objectives
describe the
essential knowledge and
skills you will learn while
studying the chapter
Companion Web Site
includes activities that
extend learning beyond the
classroom and downloadable
concept organizers
Chapter Openers