Abductor - Muscle that draws a body part away from the midline of the body.

Achilles - The common tendon of the soleus and gastrocnemius muscles in the back of lower leg.

Adductors - Triangular muscles in the thigh that act to draw the leg inward to the midline of the body.

Coracobrachialis - Muscle with its origin on the scapula and insertion on the inner side of the humerus and functions by flexing and adducting the arm and shoulder.

Deltoid - Large triangular muscle covering the shoulder joint. It abducts, flexes, extends, and rotates the arm.

Dorsiflexed - Bending or flexing backward as in the upward bending of the foot, wrist, or toes. Flexing the ankle so that the foot moves toward the shin.

Evert - Turning the foot outward from the body at the ankle so that the little toe lifts.

Gluteals - Pertaining to the buttocks or to the muscles that form the buttocks.

Groin - Each of two areas where the abdomen joins the thighs.

Hamstrings - Any one of three muscles at the back of the thigh; semimembranosus, semitendinosus, biceps femoris.

Intercostals - Muscles between adjacent ribs designated as external and internal.

Invert - Turning the foot inward toward the midline of the body at the ankle.

IT Band - Iliotibial band is a layer of connective tissue extending from the iliac crest to the knee and links the gluteus maximus to the tibia.

Latissimus Dorsi - One of a pair of large triangular muscles on the thoracic and lumbar areas of the back. Extends, adducts, and rotates the arm medially, draws the shoulder back and down and draws the body up.

Levator Scapulae - Muscle of the dorsal and lateal aspects of the neck and acts to raise the scapula.

Lordosis - A normal or extension curve usually seen in the neck and low back.

Lower Trap - Lower section of the trapezius muscle, connecting the apex of the scapula to the lower thoracic spine.

Posterior Pelvic Tilt - A movement in which the pelvis rotates backward. If you had a belt buckle on, you would aim it upward. Realized by contracting your lower abdominals.

Pectoralis Major - Large muscle of the upper chest wall that acts at the shoulder and connects the clavicle, the sternum, the cartileges of the second to the sixth ribs to the greater tubercle of the humerus.

Pectoralis Minor - Thin triangular muscle of the upper chest wall beneath the pectoralis major. It connects the shoulder blade to the front of the rib cage.

Peroneal - The muscles located on the outer part of the lower leg over the fibula and the peroneal nerve.

Piriformis - Flat muscle beneath the gluteals at the back of the hip joint. It attaches the sacrum to the greater trochanter of the femur and functions to stabilize and externally rotate.

Plantar Flexed - The foot pointed down at the ankle.

Psoas - Muscle which acts to flex and laterally rotate the thigh and to flex and laterally bend the spine originating from the lumbar vertebrae and inserting at the lesser trochanter of the femur.

Quadratus Lumborum - Muscle in the back which attaches to the top of the pelvis and the spine in the upper lumbar area. Its function is to hike the hip.

Quadriceps - The large four-part muscle of the anterior thigh which functions to extend the leg.

Rectus Femoris - Muscle extending the whole length of the aspect of the abdomen.

Rectus Abdominis - Muscle extending the whole length of the aspect of the abdomen.

Reps - Number of repetitions of the stretch or exercise.

Rhomboids - Muscles of the upper back and functions to draw the scapula toward the spine while supporting it and drawing it upward.

Serratus Anterior - Thin muscles of the chest wall extending from the ribs under the arm to medial border of the scapula.

Shoulder and Neck Complex - Group of muscles consisting of trapezius, deltoid, rhomboids, levator scapulae, teres minor, teres major, infraspinatus and supraspinatus.

S I Joint - Muscles attaching to the sacroiliac area of the lower vertebral column where the sacrum and the ilium bones of the pelvis come together.

Soleus - One of three posterior muscles of the lower leg which lies just under the gastrocnemius and inserts into the calcaneus of the foot.

Subscapularis - Muscle located on the underside of the scapula with insertion on the humerus.

Teres Major - Flat muscle of the shoulder which functions to adduct, extend, and rotate the arm medially.

Teres Minor - Small muscle attaching the scapula to the humerus, which functions to rotate the arm laterally.

Thoracic Extension - Extending the spine in the area of the rib cage.

Trapezius - Flat triangular muscle of the upper back and shoulder which acts to rotate the scapula, raise the shoulder and abduct and flex the arm.

Triceps - Muscle located on the back side of the upper arm and functions to extend the forearm and to adduct the arm.