Actions
Opposition of the thumb is a combination of actions that allows the tip of the thumb to touch the tips of other fingers. The part of opposition that this muscle is responsible for is the flexion of the thumb's metacarpal at the first carpometacarpal joint. This specific action cups the palm. Many texts, for simplicity, use the term opposition to represent this component of true opposition. In order to truly oppose the thumb, the actions of a number of other muscles are needed at the thumb's metacarpophalangeal joint.
Read more about this topic: Opponens Pollicis Muscle
Famous quotes containing the word actions:
“Long ago I added to the true old adage of “What is everybody’s business is nobody’s business,” another clause which, I think, more than any other principle has served to influence my actions in life. That is, What is nobody’s business is my business.”
—Clara Barton (1821–1912)
“History by apprising them [students] of the past will enable them to judge of the future; it will avail them of the experience of other times and other nations; it will qualify them as judges of the actions and designs of men; it will enable them to know ambition under every disguise it may assume; and knowing it, to defeat its views.”
—Thomas Jefferson (1743–1826)
“Coercion may prevent many transgressions; but it robs even actions which are legal of a part of their beauty. Freedom may lead to many transgressions, but it lends even to vices a less ignoble form.”
—Karl Wilhelm Von Humboldt (1767–1835)