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    • Diagram of 2 skulls showing masseter and temporalis muscles.
    Rights: National Aeronautics and Space Administration (NASA) Published 21 June 2007 Size: 88 KB Referencing Hub media

    The masseter lifts the lower jaw to close the mouth and it is the strongest muscle1 in your body.

    The temporalis helps close the mouth.

    1. muscle: The tissue that makes it possible for an animal to move and to maintain its posture. Muscles also make the heart beat, force blood to circulate and move food along the digestive system. The human body has more than 600 muscles.

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    Meet some muscles

    There are over 630 muscles in your body! Here are seven of them: Masseter The masseter runs from the temporal bone (that forms part of the sides and base of the skull) to the lower jaw (the ...

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      2. The tissue that makes it possible for an animal to move and to maintain its posture. Muscles also make the heart beat, force blood to circulate and move food along the digestive system. The human body has more than 600 muscles.

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