Muscles that attach to bones to provide the needed strength to move an object use which of the following to obtain their objective?
a. Posture
b. Leverage
c. Isometric contraction
d. Muscle tone
B
Leverage is an inducing or compelling force that occurs when specific bones, such as the humerus, ulna, and radius, and associated joints, such as the elbows, act together as a lever. Posture is the position of the body in relation to the surrounding space. Isometric contraction causes an increase in muscle tension but no active movement. Muscle tone is the normal state of balanced muscle tension.
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