01·What is the large, triangular muscle that forms the rounded contour of the human shoulder and is the prime mover of arm abduction?
02·Name the large two-headed muscle on the front of the upper arm responsible for flexing the elbow and supinating the forearm.
03·What is the large three-headed muscle on the back of the upper arm that acts as the primary extensor of the elbow joint?
04·What is the collective term for the group of four muscles (supraspinatus, infraspinatus, teres minor, and subscapularis) that stabilize the shoulder joint?
05·Which large, fan-shaped muscle of the upper chest is responsible for adduction and medial rotation of the arm?
06·Which broad, flat muscle of the middle and lower back is known as the 'lats' and is responsible for arm extension, adduction, and internal rotation?
07·This muscle lies deep to the biceps brachii and is the most powerful flexor of the elbow.
08·Which rotator cuff muscle initiates arm abduction (the first 15 degrees) and is located in the supraspinous fossa of the scapula?
09·Which rotator cuff muscle is the main external rotator of the shoulder and is located in the infraspinous fossa of the scapula?
10·This muscle, often called the 'little helper' of the latissimus dorsi, assists in adduction and medial rotation of the humerus.
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