Shoulder extension muscles prime mover. A muscle with the opposite action of the prime mover is called an antagonist. Pectoralis major is the muscle which acts as prime mover in shoulder flexion. Study with Quizlet and memorize flashcards containing terms like Shoulder (GH) Joint: Flexion, Shoulder (GH): Extension, Shoulder (GH): Abduction and more. Generally, this is the muscle that will generate the most force during a joint action when exerting force against an external load. . Study with Quizlet and memorize flashcards containing terms like Prime Mover of Shoulder Flexion and Synergist of Shoulder Flexion, Prime Mover of Shoulder Extension; Synergist of Shoulder Extension, Prime Mover of Shoulder Abduction; Synergist of Shoulder Abduction and more. com Jul 12, 2025 · Explanation: Extension at the shoulder joint occurs when the arm moves backward. Prime Mover: The muscle that can produce the most force for a joint action. The latissimus dorsi, teres major, and posterior deltoid are the primary muscles involved in shoulder extension. Study with Quizlet and memorize flashcards containing terms like anterior deltoid, prime mover for shoulder abduction and shoulder horizontal abduction, shoulder horizontal abudction and more. The biceps brachii assist this movement. Muscles that have their origins in the anterior (front of) shoulder joint tend to flex the arm (pectoralis major, coracobrachialis and anterior fibres of the deltoid). Nov 26, 2020 · The most important shoulder muscles are the four rotator cuff muscles-the subscapularis, supraspinatus, infraspinatus and teres minor muscles-which connect the scapula to the humerus and provide support for the glenohumeral joint. The neuromuscular control of the scapula relies on the balanced team-work between the global movers and the fine-tuning stabilizing muscles of the shoulder complex. See full list on brookbushinstitute. Jun 17, 2023 · Shoulder flexion and extension refer to movements of the shoulder joint that involve raising and lowering the arm in front of or behind the body, respectively. Antagonists play two important roles in muscle function: (1) they maintain body or limb position, such as holding the arm out or standing erect; and (2) they control rapid movement, as in shadow boxing without landing a punch or the ability to check the motion of a limb. Study with Quizlet and memorize flashcards containing terms like Shoulder Flexion, Shoulder Extension, Shoulder Abduction and more. tqvi rwn 7mo piqljqjf h7hnfk bhfx q6 wpnces 9me7s vuzze