An agonist (prime mover)
A muscle that assists the primary mover or Agonist
The primary mover.
The muscle that is primarily responsible for bringing about a particular movement is called the prime mover or agonist muscle. It is the main muscle that contracts to create the desired movement at a joint. Antagonist muscles work in opposition to the prime mover to control the movement and prevent injury.
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.
prime mover (agonist)Not sure what you're asking here, but the biceps brachii is the prime mover facilitating flexion at the elbow joint.
The primary movement is called the Prime mover or Agonist
Muscles cannot push, they can only pull which means they work in pairs in order to move, this is known as antagonistic pairs. For example with a bicep curl you have the agonist/ prime mover (Bicep) and the antagonist/ Opposing muscle group (Triceps). As the agonist contracts it pulls the antagonist which relaxes.
Muscles can be classified into agonist (prime mover) muscles that directly produce a desired movement, antagonist muscles that oppose the action of agonist muscles, and synergist muscles that assist the agonist muscles in performing a movement. Additionally, stabilizer muscles provide support and stability to joints during movement.
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.
prime mover (agonist)