Definition
A prime mover muscle, also known as an agonist muscle, is the main muscle responsible for a specific movement. It provides the primary force to initiate and carry out the movement.
How Prime Movers Work
Imagine lifting a weight with your bicep. Your bicep is the prime mover in this action. It contracts, pulling your forearm upwards. Other muscles might assist, but the bicep is the primary force behind the movement.
Examples of Prime Movers
- Biceps brachii: Flexes the elbow joint.
- Quadriceps femoris: Extends the knee joint.
- Gastrocnemius: Plantar flexes the foot.
- Gluteus maximus: Extends the hip joint.
Importance of Prime Movers
Prime movers are essential for our daily activities, from walking and running to lifting objects and performing complex movements. They provide the power and control needed to execute these actions effectively.
