Want this question answered?
Fixator
A muscle that assists the primary mover or Agonist
the prime mover is the muscle responsible for most of the movement in a group of muscles; called the chief muscle.
The muscle that is responsible for most of a movement is called a prime mover. It may also be called an agonist.
One is the agonist and the other is called the antagonist. Agonist: muscle which is the main mover, it contracts and shortens Antagonist: muscle that lengthens and controls e.g. flexion at the elbow: the biceps are the agonist and the triceps are the antagonist.
A prime mover is the muscle that has the most influence in one direction on the joint it acts on. For example the prime mover in extension of the forearm is the triceps.
Antagonist: A muscle that opposes a prime mover
.. Masseter - prime mover of jaw closure - elevates the mandible ... External intercostals - with 1st rib fixed by scalene muscles - pull ribs toward one
Your leg muscles work together to help you walk up stairs.
prime movers : muscle that initiate a particular movement synergism : muscles that have the same action of the prime mover antagonist : muscles that come into play to oppose a certain movement
The muscles you use in a push-up are the chest, back, and triceps. Around the eyes (crow's feet)
If I'm not mistaken I believe that for this movement to happen there are two muscles that need to be used- because muscles work in pairs. For this particular movement I am sure that the Agonist muscle (prime mover), the muscle that relaxes, is the Bicep. And the Antagonist, the muscle that contracts, is the Tricep.