Document 1501421

Lesson 2
The Muscular System
Scan Lesson 2 in your book. Write three questions you have about your muscles in your
Science Journal. Try to answer your questions as you read.
Organize information about the important functions of the
Functions of the
Muscular System
I found this on page
muscular system.
.
Muscular System
I found this on page
.
Draw a relaxed muscle and a contracted muscle.
I found this on page
.
Describe the role of tendons.
attach
Tendons
stabilize joints to
138
Structure and Movement
Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
Contracted
Relaxed
Lesson 2 | The Muscular System (continued)
I found this on page
.
Identify how muscle contractions affect the body’s temperature
regulation.
energy is
Muscles contract
Types of Muscles
changed to
energy, which warms the body.
Summarize the 3 types of muscle tissue. Describe and give
an example of each type.
Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
Type of
Muscle
I found this on page
.
I found this on page
.
Cardiac, or
heart
I found this on page
.
Smooth, or
involuntary
Description
Example
Skeletal , or
voluntary
heart
Structure and Movement
139
Lesson 2 | The Muscular System (continued)
Detail the effects of behaviors on muscle health.
Healthy Muscles
I found this on page
.
Cause
Effect
provides energy to muscles and helps keep
them strong
Not getting
enough
exercise
Muscle loss
The Muscular System
and Homeostasis
I found this on page
Sequence how the muscular system helps maintain
homeostasis.
.
You are playing in a soccer game. The temperature is 10˚C. You feel cold.
The game begins. You start to
energy. Your body gets
Your muscle cells also need more
.
energy to
.
and need to get rid of
muscles of the heart contract more often and
. More
is carried to the cells.
Suppose that you were on a school bus that broke down on a cold
winter day. What could you suggest to help keep everyone warm?
140
Structure and Movement
Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
As you move, your muscles change
.