A narrow, elongated muscle of the rotator cuff. It is located below the infraspinatus and assists in the external rotation of the humerus.
Infraspinatus
A thick triangular muscle which occupies the chief part of the infraspinous fossa. It is a rotator cuff muscle that externally rotates the humerus.
Supraspinatus
One of the four muscles that make up the rotator cuff of the shoulder. It resides in the supraspinous fossa of the scapula and assists in arm abduction.
PSIS
Posterior Superior Iliac Spine; the posterior-most point of the iliac crest, often identified by skin dimples on the lower back.
ASIS
Anterior Superior Iliac Spine; a bony projection of the iliac bone and an important landmark of the pelvic girdle.
Greater Trochanter
A large, irregular, quadrilateral eminence and a part of the skeletal system that provides an attachment point for several muscles, including the gluteus medius and minimus.
Xiphoid Process
The smallest and inferior-most part of the sternum. It is cartilaginous in children but becomes ossified into bone in adults.
Sternum
The flat, T-shaped bone located in the center of the chest that connects to the ribs via cartilage. It consists of the manubrium, body, and xiphoid process.