Trapezius and Levator Scapulae
Prime mover is the bicep and the antagonist is the tricep.
The prime muscle differs depending on the degree of abduction. From 1 to 20 degrees it is the supraspinatus muscle, from 20 to 90 degrees it is the deltoid and from 90 degree and above the action is done by that rotate the scapula (trapezius and serratus anterior).
In the canine: the gluteal muscles (superficial, middle, deep).
The latissimus dorsi is the muscle responsible for moving the arm posterior or backwards.
the supraspinatus ...I think Deltoid muscle(acromial part)
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.
The deltoid is the prime mover in shoulder abduction. It's two antagonists are the pectoralis major and the latissimus dorsi.
Because shoulder horizontal adduction is performed when the arm is horizontal position (i.e., the elbow is level with shoulder) and adduction is movement toward the center of the body, shoulder horizontal adduction is performed primarily by pectoralis major and anterior deltoid, with an assist by latissimus dorsi.
The prime mover for shoulder internal rotation is the subscapularis muscle, which is one of the four muscles that make up the rotator cuff. It originates on the subscapular fossa of the scapula and inserts on the lesser tubercle of the humerus. Contraction of the subscapularis muscle causes internal rotation of the shoulder joint.
The prime mover for protracting and holding the scapula against the thorax wall in boxers is the serratus anterior muscle. This muscle is important for providing stability and support to the shoulder blade during punching movements. It is often referred to as the "boxer's muscle" due to its role in maintaining proper shoulder function during boxing activities.
Antagonist: Controls movement, opposite of prime mover Prime Mover: Main muscle that is directly responsible for movement Synergist: Aids in movement of muscle
Gluteus medius is prime mover.Other abductors are:Gluteus MinimusTensor Fascia Latae (TFL)Sartorius