Antagonist Muscles – Are muscles which work in pairs and opposites. The agonist muscle causes the action, while the antagonist relaxes. These roles reverse when the actions works the other way
Note: Muscles can not push.
Use the following mnemonic to remember what antagonistic means:
The antagonism she cause with a stick (antagonistic) was beyond belief she should have used her stick but although they were a pair of twins they were complete personality opposites.
Antagonistic muscles work in pairs and opposites. A clear example is as follows:
Muscles move body parts by isotonic contraction (either eccentric or concentric) they in effect pull the bones or release the bones under tension but muscles can not push bones.
The agonist muscle causes the action while the antagonist muscle relaxes. The roles reverse when the action works the other way. To remember the difference use the following mnemonic on the next page.