MUSCLE PHYSIOLOGY

Detailed explanation-1: -The deltoid muscle is the main muscle of the shoulder. It helps move your upper arm and stabilizes the shoulder joint. The deltoid muscle extends from the ridge of the scapula (shoulder blade) to the end of the clavicle (collarbone).

Detailed explanation-2: -Find the acromion process, which is the bony bit that sticks out from your shoulder, just above the deltoid muscle.

Detailed explanation-3: -What are deltoid muscles? Your deltoid muscles are in your shoulder, which is the ball-and-socket joint that connects your arm to the trunk of your body. Deltoid muscles help you move your arms in different directions.

Detailed explanation-4: -Muscles that work with the deltoid include the supraspinatus, infraspinatus, teres minor, and the subscapularis.

Detailed explanation-5: -Latissimus dorsi (lats), the largest muscle in the upper part of your body. It starts below your shoulder blades and extends to your spine in the lower part of your back.