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7-3.3 SUMMARIZE THE RELATIONSHIPS OF THE MAJOR BODY SYSTEMS MUSCULAR SYSTEM- WORKS WITH THE SKELETAL SYSTEM TO ALLOW MOVEMENT. Muscular System Notes.

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Presentation on theme: "7-3.3 SUMMARIZE THE RELATIONSHIPS OF THE MAJOR BODY SYSTEMS MUSCULAR SYSTEM- WORKS WITH THE SKELETAL SYSTEM TO ALLOW MOVEMENT. Muscular System Notes."— Presentation transcript:

1 7-3.3 SUMMARIZE THE RELATIONSHIPS OF THE MAJOR BODY SYSTEMS MUSCULAR SYSTEM- WORKS WITH THE SKELETAL SYSTEM TO ALLOW MOVEMENT. Muscular System Notes

2 Functions of the Muscular System The Primary Function of the Muscular System is Movement. Every movement in your body---from the beating of your heart, to the movement of food down your throat---occurs because of your muscles.

3 Muscle Movement Voluntary- you can consciously control them (like the muscles in your arms). Involuntary- you cannot consciously control them (like the muscles in your intestines).

4 Skeletal Muscles Attached to your skeleton with Tendons Functions:  Perform Voluntary Movement  Walking and Flexing Description:  Long, striated (striped) fibers  Fibers work in pairs by contracting  Get tired easily

5 Smooth Muscle Found inside organs. Functions  automatically control many types of movement (Ex. Pushing food down digestive system) Description:  Involuntary  Shorter than Skeletal Muscles  Found in walls of stomach, blood vessels, and intestines  Contract Slowly  Do not get tired easily

6 Cardiac Muscles Found in the heart. Functions:  Pump blood through blood vessels by making heart beat. Description:  Involuntary  Striated  Branched Shape  Contract Slowly  Do not get tired

7 Comparison of Muscle Types

8 Tendons Tendons are strong tissues that attach muscle to bones. How They Work:  As muscle fibers contract, they shorten and pull the tendon.  In turn, the tendon pulls the bone and makes it move.


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