Humeral, Ulnar, Radial Landmarks, Elbow Joint and Muscles

These flashcards cover key terms and concepts related to the humeral, ulnar, and radial landmarks, elbow joint anatomy, muscles involved in movements at the elbow, and important ligaments.

Medial epicondyle

A bony prominence on the medial side of the humerus, serving as an attachment point for muscles.

Trochlear notch

The concave surface of the ulna that articulates with the trochlea of the humerus.

Annular ligament

A ligament that encircles the head of the radius and secures it to the ulna.

Biceps Brachii

A muscle that flexes the elbow and supinates the forearm, with origins above the glenoid fossa and coracoid process.

Elbow joint

A hinge joint that primarily allows for flexion and extension between the humerus and ulna.

Ulnar collateral ligament (UCL)

A ligament that prevents the elbow from abducting, providing stability to the joint.

Supination

The rotation of the forearm and hand so that the palm faces upward.

Triceps Brachii

A muscle responsible for extension at the elbow, originating from the scapula and humerus, and inserting at the olecranon process of the ulna.

Coronoid process

A bony projection on the ulna that fits into the coronoid fossa of the humerus.

Surgical neck

A common site of fracture in the humerus, located just below the head of the humerus.

Radial tuberosity

A bony prominence on the radius where the biceps brachii inserts.

Flexion

The bending of a joint to decrease the angle between two bones, such as at the elbow.

Olecranon fossa

A deep depression on the humerus that accommodates the olecranon process of the ulna during elbow extension.

Brachialis

A muscle that flexes the elbow, originating from the humerus and inserting on the coronoid process of the ulna.

Pronation

The rotation of the forearm and hand so that the palm faces downward.

Hinge joint

A joint that allows movement in one plane, primarily flexion and extension.

Radial collateral ligament

A ligament that stabilizes the lateral aspect of the elbow joint during flexion.

Greater Tubercle

A large bony prominence on the humerus that serves as an attachment point for shoulder muscles.

Supinator

A muscle that aids in the supination of the forearm, originating from the lateral epicondyle of the humerus.