The muscles of the human body not only bend the body by muscular force, but also serve as brakes, slowing the reactions. For instance, the biceps and the brachialis anticus muscles are placed in the front of the upper arm and, by their contraction, they bend the elbow. If power ceased altogether, the forearm would drop down. But the opposing muscle slows the otherwise uncontrolled movement after the manner of a brake. This mechanism of slow motion pervades all the limbs and every movement of the body.
Was this article helpful?