The Brain – Fun Body Facts
Body Facts:
Did you know that the strongest muscle based on its weight is the Masseter. With all muscles of the jaw working together it can close the teeth with a force as great as 55 pounds (25 kilograms) on the incisors or 200 pounds (90.7 kilograms) on the molars.
Masseter 
[masē′tər]
Etymology: Gk, one who chews
the thick rectangular muscle in the cheek that functions to close the jaw.
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