The supraspinatus originates from which area?

• A. Infraspinatus fossa
• B. Supraspinatus fossa of the scapula
• C. Subscapular fossa
• D. Coracoid process

Answer: (B)

Muscle origin is where a muscle begins and stays fixed during movement. The supraspinatus starts from the supraspinatus fossa of the scapula, the hollow area above the spine on the scapula’s posterior surface. It then travels to insert on the greater tubercle of the humerus and helps initiate the first part of arm abduction. The other bony areas listed correspond to different muscles: the infraspinatus fossa houses the infraspinatus, the subscapular fossa houses the subscapularis, and the coracoid process serves as an attachment for several muscles like the coracobrachialis, the short head of the biceps brachii, and pectoralis minor.