Learn About The Muscular System

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Muscles can only pull. They never push.

Muscles are bundles of cells and fibers. Muscles work in a very simple way. All they do is tighten up--that is, contract--and relax. You have two sets of muscles attached to many of your bones which allow them to move. There are 630 active muscles in your body and they act in groups. Muscles can only pull. They never push.

MOVE

There is one basic function of the musculatory system: MOVEMENT!

But, there are 2 types of movement: voluntary and involuntary. Voluntary movement is moving by choice. For example, talking, running, cartwheeling, dancing, skiing, typing, opening and closing your eyes by choice, and many more things.

Involuntary movement is moving without thinking. For example, breathing, heart beating, reflexes, blinking (have to not want to), and many more things.

Muscles make up the bulk of the body and account for about one-third of its weight.

Muscles: Our Muscular System

by: Seymour Simon

From School Library Journal
Grade 3-5-In his instantly recognizable style, Simon addresses the anatomy and function of bones and muscles. Describing bones as being like "the framework of a building," he emphasizes that they are living parts of the body, protecting organs and manufacturing blood cells and platelets. Explanations of joints, fractures, and arthritis are also included. In Muscles, the three kinds of muscle and their functions are discussed. In addition, the effect of exercise and diagnosing injuries are covered. In both books, the full-paged illustrations are great and include full-color photographs, MRI scans, X rays, and excellent drawings. Two more outstanding additions to Simon's resume.
Christine A. Moesch, Buffalo & Erie County Public Library, NY
Copyright 1998 Reed Business Information, Inc.

Amazon Price: $6.99 (as of 12/19/2009)

Bend and Stretch: Learning About Your Bones and Muscles (Nettleton, Pamela Hill. Amazing Body.)

by: Pamela Hill Nettleton

Amazon Price: $22.60 (as of 12/19/2009)

The Muscular System Anatomical Chart

Amazon Price: $14.00 (as of 12/19/2009)

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What Are Muscles Made of?
Muscles are all made of the same material, a type of elastic tissue (sort of like the material in a rubber band). Thousands, or even tens of thousands, of small fibers make up each muscle. You have three different types of muscles in your body: smooth muscle, cardiac (say: kar-dee-ak) muscle, and skeletal (say: skeh-luh-tul) muscle.

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Learn About The Muscular System

Muscles can only pull. They never push.

MOVE

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