What group of muscles are antagonists?
In an antagonistic muscle pair, as one muscle contracts, the other muscle relaxes or lengthens. The muscle that is contracting is called the agonist and the muscle that is relaxing or lengthening is called the antagonist.
Antagonistic muscle pairs.
Is the biceps brachii agonist or antagonist?
Flexing of the forearm by the biceps brachii: The biceps brachii is the agonist, or primer mover, responsible for flexing the forearm. The triceps brachii (not shown) acts as the antagonist.
Why biceps and triceps are called antagonistic muscles?
Note: Antagonistic muscles are those muscles, which contract to supply opposite movements at an equivalent joint. … Biceps and triceps are called antagonistic muscles. Because during flexion at the elbow, biceps contract and triceps relaxes, during extension at an equivalent joint, triceps contract, and biceps relax.
What are antagonistic muscles Class 11?
Antagonistic muscles are those muscles which produce movements in an antagonistic pair of muscles by opposing the movement of the agonistic muscle .i.e. when one contacts the other relaxes and vice versa.