A group of muscles (Longus and Brevis) on the radial side of the forearm that act to extend and abduct the hand at the wrist. These muscles are often involved in lateral epicondylitis (tennis elbow).
Flexor Carpi Radialis
A muscle of the human forearm that acts to flex and (radial) abduct the hand. It is a superficial muscle that runs along the radial side of the forearm toward the wrist.
Supinator
A broad muscle in the posterior compartment of the forearm, curved around the upper third of the radius. Its primary function is to supinate the forearm, turning the palm upward.
Pronator Teres
A muscle of the forearm that, along with the pronator quadratus, serves to pronate the forearm (turning the palm downward). It also assists in elbow flexion.
Brachialis
A muscle in the upper arm that lies deep to the biceps brachii. It is a synergist that assists the biceps in flexing the elbow. Unlike the biceps, the brachialis is a “pure” flexor and does not participate in forearm rotation.
Triceps Brachii
A large, three-headed muscle located on the back of the upper arm. It is the primary extensor of the elbow joint and also acts to stabilize the shoulder joint. It is the anatomical antagonist to the biceps brachii.
Iliacus
A flat, triangular muscle which fills the iliac fossa. It joins the psoas major to form the iliopsoas, acting as a primary hip flexor and stabilizer of the pelvis.
Inguinal Ligament
A band of connective tissue running from the anterior superior iliac spine (ASIS) to the pubic tubercle. It forms the base of the inguinal canal and is a landmark for the border between the abdomen and thigh.