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Shoulder Muscles

Functional Anatomy: Muscle and Isolated Function

MuscleIsolated Function
Latissimus Dorsi Concentrically accelerates shoulder extension, adduction, and internal rotation
Serratus Anterior Concentrically accelerates scapular protraction
Rhomboids Concentrically produces scapular retraction and downward rotation
Lower Trapezius Concentrically accelerates scapular elevation
Middle Trapezius Concentrically accelerates scapular retraction
Upper Trapezius Concentrically accelerates cervical extension, lateral flexion, and rotation Concentrically accelerates scapular elevation
Levator Scapulae Concentrically accelerates cervical extension, lateral flexion, and ipsilateral rotation when the scapulae is anchored
Pectoralis Major Concentrically accelerates shoulder flexion (clavicular fibers0, horizontal adduction, and internal rotation
Pectoralis Minor Concentrically protracts the scapula
Deltoid- Anterior, Middle, and Posterior Anterior: Concentrically accelerates shoulder flexion and internal rotation Middle: Concentrically accelerates shoulder abduction Posterior: Concentrically accelerates shoulder extension and external rotation
Biceps Brachii Concentrically accelerates elbow flexion, supination of the radioular joint, and shoulder flexion
Triceps Concentrically accelerateselbow extension and shoulder extension
Created by: adamnestor