1 Voluntary, (vol-un-tary) muscles are the ones that you can control. 2  Most of them move your bones around. 3  If you want to run, walk, ride a bike, wave your arms around, or eat your favourite sandwich, it is your voluntary muscles which move your arms, legs and body around.
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1 You can see the shape when you bend your arm up. 2  Flat muscles are the muscles like your diaphragm or in your forehead. 3  Triangular muscles are like the deltoid (say del-toy-d) muscle at the top of your arm. 4  This pulls your arm up when you want to ask the teacher a question.
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A muscle may act ordinarily either under the control of the will or without conscious control. Muscles that can be controlled at will are referred to as voluntary muscles. Those that are not under the control of the will (volition) are called involuntary muscles. Examples of involuntary muscles are the smooth muscles, which are muscles lacking striations when viewed under a microscope. This is why involuntary muscles are sometimes called non-striated or un-striped muscles.
http://www.biology-online.org/dictionary/Involuntary_Muscle
1 Most of them move your bones around. 2  If you want to run, walk, ride a bike, wave your arms around, or eat your favourite sandwich, it is your voluntary muscles which move your arms, legs and body around. 3  But they can't do that unless your brain sends the right muscles the messages to 'contract' or 'relax'.
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Muscle tissues are derived from the mesodermal layer of embryonic germ cells in a process known as myogenesis. There are three types of muscle, skeletal or striated, cardiac, and smooth. Muscle action can be classified as being either voluntary or involuntary. Cardiac and smooth muscles contract without conscious thought and are termed involuntary, whereas the skeletal muscles contract upon command. Skeletal muscles in turn can be divided into fast and slow twitch fibers.
https://en.wikipedia.org/wiki/Muscle
Muscle is a soft tissue found in most animals. Muscle cells contain protein filaments of actin and myosin that slide past one another, producing a contraction that changes both the length and the shape of the cell. Muscles function to produce force and motion.
https://en.wikipedia.org/wiki/Muscle
These muscles contract slowly and rhythmically as opposed to skeletal muscles that contract relatively faster (under the control of the will). Another example of involuntary muscle is the cardiac muscle. The latter is the muscle of the heart.
http://www.biology-online.org/dictionary/Involuntary_Muscle
Classified under: Nouns denoting body parts. Hypernyms (voluntary muscle is a kind of...): skeletal muscle; striated muscle (a muscle that is connected at either or both ends to a bone and so move parts of the skeleton; a muscle that is characterized by transverse stripes).
http://www.audioenglish.org/dictionary/voluntary_muscle.htm
1 The muscles in your heart, which keep blood pumping round your body. 2  The muscles in your digestive system which move food down to your stomach and keep moving it along your bowel until all the goodness that your body needs is taken out. 3  Then they work to push the waste that is left over out of your body.
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1 They know their job and they keep right on doing it. 2  Some examples are: 3  The muscles in your heart, which keep blood pumping round your body. 4  The muscles in your digestive system which move food down to your stomach and keep moving it along your bowel until all the goodness that your body needs is taken out.
http://www.cyh.com/HealthTopics/HealthTopicDetailsKids.aspx?p=335&np=152&id=2457
voluntary muscle definition
Muscles that can be controlled at will are referred to as voluntary muscles.