Final answer:
The rotator cuff is made up of the subscapularis, supraspinatus, infraspinatus, and teres minor muscles, which stabilize and allow a range of movements in the shoulder.
Step-by-step explanation:
The four muscles that make up the rotator cuff are the subscapularis, supraspinatus, infraspinatus, and teres minor. These muscles originate from the scapula and attach to the humerus. Their tendons form a cuff around the shoulder joint, hence the name rotator cuff. This musculotendinous cuff is essential for shoulder stability, enabling a wide range of arm movements and providing support to the shoulder joint. The rotator cuff is crucial when performing overhead activities, such as throwing a baseball. Maintaining the health and strength of the rotator cuff is vital for athletic performance and everyday activities involving arm movement.
The rotator cuff is made up of four muscles: supraspinatus, infraspinatus, teres minor, and subscapularis. These muscles arise from the scapula and attach to the greater or lesser tubercles of the humerus. Their tendons encircle the head of the humerus, becoming fused to the articular capsule. The rotator cuff muscles not only move the upper limb but also provide structural support for the shoulder joint.