Muscle, piriformis
A muscle that begins at the front surface of the sacrum (the V-shaped bone between the buttocks, at the base of the spine) and passes through the greater sciatic notch to attach to the top of the thighbone (femur) at its bony prominence (the greater trochanter). The gluteus maximus muscle covers the piriformis muscle in the buttocks.
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- Muscle, psoas
so-as. The word “psoas” is Greek for the loins, the muscles of the lower back.
- Muscle, subscapularis
A muscle that moves the arm by turning it inward (internal rotation). The tendon of the subscapularis muscle is one of four tendons that stabilize the shoulder joint and constitute the rotator cuff.
- Muscle, supraspinatus
A muscle that is responsible for elevating the arm and moving it away from the body. The tendon of the supraspinatus muscle is one of four tendons that stabilize the shoulder joint and constitute the rotator cuff.
- Muscle, teres minor
A muscle that assists in the lifting of the arm during outward turning (external rotation) of the arm. The tendon of the teres minor muscle is one of four tendons that stabilize the shoulder joint and constitute the rotator cuff.
- Muscles, abdominal
A large group of muscles in the front of the abdomen that assists in the regular breathing movement and supports the muscles of the spine while lifting and keeping abdominal organs such as the intestines in place. Abdominal muscles play a key role in exercises such as “sit-ups” or “crunches”.