The prime mover for shoulder flexion is the anterior deltoid muscle. This muscle is responsible for lifting the arm forward and upward at the shoulder joint.
Do you mean flexion and (abd)uction?? If so, the prime mover would be the deltoid muscle with many smaller muscles assisting. If you are in fact meaning flexion and adduction, the prime mover would be the pectoralis major and the latissimus dorsi with many smaller muscles assisting.
A synergist muscle helps a prime mover muscle in creating a specific movement. It assists the prime mover by reducing unnecessary movements and helping stabilize the joint. Synergist muscles work together to produce coordinated movement.
An immobilization of the origin of a prime mover would prevent the muscle from contracting and generating movement. This can be due to injury, neurological impairment, or structural damage, and would result in limited or no function of the muscle. Rehabilitation and therapy may be required to restore movement and function.
Quadricepts
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.
the prime mover is the muscle responsible for most of the movement in a group of muscles; called the chief muscle.
Antagonist: Controls movement, opposite of prime mover Prime Mover: Main muscle that is directly responsible for movement Synergist: Aids in movement of muscle
The prime mover for shoulder flexion is the anterior deltoid muscle. This muscle is responsible for lifting the arm forward and upward at the shoulder joint.
An agonist (prime mover)
Prime mover in medical terms means the muscle that is mainly responsible for a given motion.
The prime mover for the hip is the gluteus maximus. It is the most powerful muscle responsible for extending the hip joint, moving the thigh backward.
antagonist
An antagonist muscle reverses the action of a prime mover. When the prime mover contracts to produce a movement, the antagonist muscle relaxes to allow that movement to occur in the opposite direction. This coordination between prime movers and antagonists is essential for controlled and coordinated movement.
The Gastrocnemius (calf muscle) is the primary mover. The Synergist (or assistor) muscle is the Soleus.
The fixator of a muscle stabilizes the muscle at the point of origin.
Trapezius and Levator Scapulae