List of Muscles Pectoralis (minor and major) Serratus Anterior Trapezius (upper,
List of Muscles Pectoralis (minor and major) Serratus Anterior Trapezius (upper, middle and lower) Levator scapula Rhomboid minor and major Latissimus Dorsi Supraspinatus, infraspinatus, subscapularis, and teres minor Deltoid (anterior, middle and posterior) Biceps Brachii Brachialis Brachioradialis Triceps Brachii PROMPT: MUSCLES MOVING THE ARM AT THE GLENOHUMERAL JOINT 1. Following the directions of the discussion board regarding images, create your own labeled illustrations or models showing ONLY the muscles moving the arm at the shoulder (glenohumeral joint); color coding and labeling the group of muscles by function. For example, color in blue all the muscles producing flexion of the arm. 2. Following the directions of the discussion board regarding videos and using your created images, make a short video (maximum 2 minutes long!) where you introduce yourself and using the proper anatomical terminology and surface anatomy landmarks learned so far in this course, complete the following tasks: 1. Correctly and slowly describe and perform each movement of the arm at the shoulder: flexion, extension, hyperextension, abduction, adduction, medial rotation, lateral rotation, and circumduction of the arm at the shoulder. 2. The video MUST clearly show and emphasize how the glenohumeral joint allows only movements of the arm, NOT the forearm. 3. Specify the name of each movement as you perform it, mentioning the articulation(s) that allows it and the prime mover and synergists involved in each movement. Point with precision at the location of these groups of muscles as you name them. 4. Describe how the location of these muscles as they cross the shoulder can explain each movement of the arm. For instance, show how the Pectoralis Major crosses anteriorly the shoulder joint; hence, when it contracts it pulls the arm anteriorly producing flexion.

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