pectoralis major
the antagonist of adduction is the pectoralis major
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.
shoulder flexion shoulder adduction shoulder horizontal extension
Adduction of upper arm at the shoulder
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.
Shoulder adductors. Abduction means moving away from the median plane of the body and adduction means moving towards the median plane of the body.
The muscle of the pectoralis is antagonist to the latissimus dorsi during the shoulder adduction. The anterior fibers are involved in shoulder abduction when the shoulder is externally rotated.
The glenohumeral joint is commonly known as the shoulder joint it is not a muscle. It acts functionally as a diarthrosis and multiaxial joint.It is the most moveable joint in the body.Flexion and extension of the shoulder joint in the (sagittal plane).Abduction and adduction of the shoulder (frontal plane).Horizontal abduction and horizontal adduction of the shoulder (transverse plane).Medial and lateral rotation of shoulder (also known as internal and external rotation).Circumduction of the shoulder (a combination of flexion/extension and abduction/adduction).
The coracobrachialis muscle is involved with in the flexion and the adduction of the shoulder. That is to say, raising the arm and bringing the arm across the chest, respectively.
It contributes to adduction, horizontal adduction, and flexion of the humerus, enabling the arm to swing forwards, and it is a synergist of the pectoralis minor.
how do prefixes in the terms adduction and abduction explain their possible muscle action
The pectoralis major muscle is responsible for movements of the shoulder joint, such as flexion, adduction, and medial rotation of the arm. It also helps in stabilizing the shoulder joint during various activities like pushing, pulling, and lifting objects.