| Term | Definition |
| Scapulohumeral Muscles | Deltoid, Teres Major, Supraspinatus, Infraspinatus, Teres Minor, Subscapularis |
| Rotator Cuff Muscles | Supraspinatus, Infraspinatus, Teres Minor, Subscapularis |
| Deltoid - Proximal Attachments | Clavicle (Lateral - Anterior Border & Superior Surface) |
| Deltoid - Distal Attachement | Humerus (Deltoid Tuberosity) |
| Deltoid - Innervation | Axillary Nerve |
| Deltoid - Actions | Anterior Fibers (Shoulder Flexion & Medial Rotation), Middle Fibers (Shoulder Abduction), Posterior Fibers (Shoulder Extension & Lateral Rotation) |
| Teres Major - Proximal Attachment | Scapula (Posterior Surface of Inferior Angle) |
| Teres Major - Distal Attachment | Humerus (Medial Lip of Intertubercular Groove) |
| Teres Major - Innervation | Lower Subscapular Nerve |
| Teres Major - Actions | Shoulder Adduction, Shoulder Extension, Medial Rotation, Holds Humeral Head in Glenoid Cavity of Scapula |
| Supraspinatus - Proximal Attachement | Scapula (Supraspinous Fossa) |
| Supraspinatus - Distal Attachment | Humerus (Superior Facet on Greater Tubercle) |
| Supraspinatus - Innervation | Suprascapular Nerve |
| Supraspinatus - Actions | Initiates & Assists Deltoid in Shoulder Abduction, Holds Humeral Head in Glenoid Cavity of Scapula |
| Infraspinatus - Proximal Attachment | Scapula (Infraspinous Fossa) |
| Infraspinatus - Distal Attachment | Humerus (Middle Facet on Greater Tubercle) |
| Infraspinatus - Innervation | Suprascapular Nerve |
| Infraspinatus - Actions | Shoulder Lateral Rotation, Holds Humeral Head in Glenoid Cavity of Scapula |
| Teres Minor - Proximal Attachment | Scapula (Middle Part of Lateral Border) |
| Teres Minor - Distal Attachment | Humerus (Inferior Facet on Greater Tubercle) |
| Teres Minor - Innervation | Axillary Nerve |
| Teres Minor - Actions | Shoulder Lateral Rotation, Holds Humeral Head in Glenoid Cavity of Scapula |
| Subscapularis - Proximal Attachment | Scapula (Subscapular Fossa) |
| Subscapularis - Distal Attachment | Humerus (Lesser Tubercle) |
| Subscapularis - Innervation | Upper & Lower Subscapular Nerves |
| Subscapularis - Actions | Shoulder Medial Rotation, Holds Humeral Head in Glenoid Cavity of Scapula |