Actions
The Peronæi longus and brevis extend the foot upon the leg, in conjunction with the Tibialis posterior, antagonizing the Tibialis anterior and Peronæus tertius, which are dorsi-flexors of the foot.
The Peronæus longus also everts the sole of the foot, and from the oblique direction of the tendon across the sole of the foot is an important agent in the maintenance of the transverse arch.
Taking their fixed points below, the Peronæi serve to steady the leg upon the foot.
This is especially the case in standing upon one leg, when the tendency of the superincumbent weight is to throw the leg medialward; the Peronæus longus overcomes this tendency by drawing on the lateral side of the leg.
Read more about this topic: Fibularis Longus
Famous quotes containing the word actions:
“We should often be ashamed of our finest actions if the world understood all the motives behind them.”
—François, Duc De La Rochefoucauld (1613–80)
“We cannot assume the injustice of any actions which only create offense, and especially as regards religion and morals. He who utters or does anything to wound the conscience and moral sense of others, may indeed act immorally; but, so long as he is not guilty of being importunate, he violates no right.”
—Karl Wilhelm Von Humboldt (1767–1835)
“Hence a young man is not a proper hearer of lectures on political science; for he is inexperienced in the actions that occur in life, but its discussions start from these and are about these; and, further, since he tends to follow his passions, his study will be vain and unprofitable, because the end aimed at is not knowledge but action.”
—Aristotle (384–322 B.C.)