The pectoralis major and deltoid muscles are both abductors, therefore they act synergistically to pull the arms inward toward the mid-line (in this case the chest) of the body.
Pectoralis Major
anterior deltoid pectoralis major serratus anterior
The muscles that horizontally flex the shoulder are the Pectoralis Major and the coracobrachialis.
corabrachialis, biceps brachii, deltoid, pectoralis major
Pectoralis major sternocostal part and anterior fibres of Deltoid
pectoralis major, biceps brachii, deltoid
The muscles that perform adduction to the shoulder include the pectoralis major, lattissimus dors, but these are the primary movers. The fixators that do adduction are the subscapularis and teres major.
The pectoralis major muscle ends where the deltoid muscle begins at the clavicle and scapula. These muscles are important for shoulder movement and stability.
The major muscle that abducts the humerus is the Deltoid. (all muscles move in conjuction, there may be more muscles that contribute to the abduction of the humerus) pectoralis major and latissimus dorsi
The major muscle that abducts the humerus is the Deltoid. (all muscles move in conjuction, there may be more muscles that contribute to the abduction of the humerus) pectoralis major and latissimus dorsi
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 primary antagonist muscles in a seated row are the pectoralis major, anterior deltoid, and biceps brachii. These muscles lengthen as the back muscles contract during the rowing motion.