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    Week 6 - Muscular System

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    Katrina Reyes
    The muscular system is made up of over 600 muscles that work to create movement, move food and blood, produce heat, and protect organs. There are three main types of muscle: skeletal muscle which is attached to bones and allows voluntary movement; cardiac muscle which makes up the heart and pumps blood involuntarily; and smooth muscle which is found in organs and blood vessels and moves things like food and blood involuntarily. Muscles work in pairs with flexor muscles bending parts of the body and extensor muscles straightening them.

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    Week 6 - Muscular System

    Uploaded by

    Katrina Reyes
    27 views19 pages
    The muscular system is made up of over 600 muscles that work to create movement, move food and blood, produce heat, and protect organs. There are three main types of muscle: skeletal muscle which is attached to bones and allows voluntary movement; cardiac muscle which makes up the heart and pumps blood involuntarily; and smooth muscle which is found in organs and blood vessels and moves things like food and blood involuntarily. Muscles work in pairs with flexor muscles bending parts of the body and extensor muscles straightening them.

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    Week 6 - Muscular System

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    The muscular system is made up of over 600 muscles that work to create movement, move food and blood, produce heat, and protect organs. There are three main types of muscle: skeletal muscle which is attached to bones and allows voluntary movement; cardiac muscle which makes up the heart and pumps blood involuntarily; and smooth muscle which is found in organs and blood vessels and moves things like food and blood involuntarily. Muscles work in pairs with flexor muscles bending parts of the body and extensor muscles straightening them.

    Copyright:

    © All Rights Reserved
    Download as PPTX, PDF, TXT or read online from Scribd
    Download as pptx, pdf, or txt
    27 views19 pages

    Week 6 - Muscular System

    Uploaded by

    Katrina Reyes
    The muscular system is made up of over 600 muscles that work to create movement, move food and blood, produce heat, and protect organs. There are three main types of muscle: skeletal muscle which is attached to bones and allows voluntary movement; cardiac muscle which makes up the heart and pumps blood involuntarily; and smooth muscle which is found in organs and blood vessels and moves things like food and blood involuntarily. Muscles work in pairs with flexor muscles bending parts of the body and extensor muscles straightening them.

    Copyright:

    © All Rights Reserved
    Download as PPTX, PDF, TXT or read online from Scribd
    Download as pptx, pdf, or txt
    of 19

    The Muscular System

    Goal: To describe the structure and function of


    the muscular system.
    What is the
    Muscular System? • made up of over 600
    different muscles
    • Muscles- body
    structure made up of
    bundles of specialized
    cells called muscle
    fibers. 
    What are the 1. To create movement by
    Functions of the working with bones,
    Muscular System? ligaments, and tendons.
    2. To move food through the
    digestive system.
    3. To move blood through the
    body by pumping the heart.
    4. To produce heat. (It helps
    maintain our body
    temperature)
    5. To provide protection to
    inner organs.
    What are the 2 Different Types of
    Muscle?
    • Voluntary: • Involuntary
    • Muscle action that is • Muscle action that is NOT
    under your control. under your control.
    • Most skeletal movement • Cardiac and smooth muscle
    is voluntary. are involuntary.
    • Examples: • Examples:
    • Walking, talking, • Heart beating, food moving
    running, writing, through the digestive tract,
    jumping, stretching reflexes (skeletal)

    Skeletal muscle can be both voluntary and involuntary (reflexes).


    Types of Muscle
    What are the
    Types of Muscle? 1. Skeletal Muscle:
    • These are muscles attached to
    the bones through tendons. 
    • Their movement voluntary-it
    means, they move under our
    conscious control
    • They help us move and they
    give shape to our body.
    •  Helps protect your inner
    organs.
    • Tendons attach muscles to bones.
    What are • Tendons are made up of strands
    Tendons? of flexible connective tissue.
    • When a muscle contracts (gets
    shorter) the tendon pulls on the
    bone.
    What are the
    Types of Muscle? 2. Cardiac Muscle:
    • Special type of muscle found
    only in your heart.  
    • They move rhythmically
    contacting and relaxing
    alternately to generate force to
    pump blood throughout the
    body. 
    • These are involuntary
    muscles, meaning, we cannot
    consciously control its
    movement. 
    What are the
    Types of Muscle? 3. Smooth Muscle:
    • These are muscles attached to
    the different organs including
    in the walls of blood vessels
    helping the blood flow, in the
    walls of the stomach and
    esophagus (for digestion)
    •  Smooth muscle moves food
    and blood through your body.  
    • Their movement is
    involuntary- it means, we
    cannot consciously control its
    movement 
    How do • Muscles work in pairs to cause smooth,
    controlled movements.

    Muscles • Many of our basic movements are the result of


    pairs of muscles bending and straightening.
    Work in
    • Flexor - a muscle that contracts to bend a
    Pairs? part of the body.
    • Extensor – a muscle that contracts to
    straighten a part of the body.
    Flexors and extensor always work opposite of one another.
    FUN FACTS:

    The largest muscle in the body is the gluteus


    maximus.

    The smallest muscles in the body are in your inner


    ear (tensor tympani and the stapedius). 

    The strongest muscle, based on its size, is the


    masseter. It is a muscle in your jaw. 
    On your notebook
    Answer the following questions: 
    1. What is the muscular system?
    2. What are the 5 functions of the muscular system?
    3. What are voluntary and involuntary muscles?
    4. What are the three types of muscles and their
    functions?
    5. How do muscles work in pairs?
    6. How do muscles and skeleton work together?
    NOTE: Have your answers checked during face-to-
    face class. 
    Reminder: 
    Face-to-face class

    Kahoot game and graded recitation

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