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:
“Many of us, whether in the jungles of Asia or on the streets of Chicago, had discovered that noble causes can lead to ignoble actions and that we were capable of sacrificing honor to a sense of efficacy.”
—Linda Grant (b. 1949)
“Many great actions are committed in small struggles.”
—Victor Hugo (1802–1885)
“There is a Book
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On which the eyes of God not rarely look,
A chronicle of actions just and bright—
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—William Cowper (1731–1800)