Muscles that MOVE the forearm Flashcards
Biceps Brachii (Short Head)
ORIGIN
Coracoid process of scapula.
INSERTION
Radial tuberosity.
ACTION
Flexes shoulder joint, flexes elbow, and supinates forearm.
INNVERVATION
Musculocutaneous.
Biceps Brachii (Long Head)
ORIGIN
Supraglenoid tubercle of scapula.
INSERTION
Radial tuberosity.
ACTION
Flexes shoulder joint, flexes elbow and supinates forearm.
INNVERVATION
Musculocutaneous.
Brachialis
ORIGIN
Anterior surface of the distal half of humerus. INSERTION
Ulnar tuberosity and coronoid process of ulna. ACTION
Elbow flexion.
INNVERVATION
Musculocutaneous.
Brachioradialis
ORIGIN
Lateral supracondylar ridge of humerus.
INSERTION
Base of styloid process of radius.
ACTION
Elbow flexion.
INNVERVATION
Radial.
Triceps Brachii
ORIGINS
Long head: Infraglenoid tubercle of scapula. Lateral head: Posterior proximal shaft of humerus. Medial head: Posterior distal shaft of humerus.
INSERTION
Olecranon process of ulna.
ACTION
Elbow extension, shoulder extension and adduction via the long head.
INNVERVATION
Radial.
Triceps Brachii (Long Head)
ORIGIN
Infraglenoid tubercle of scapula.
INSERTION
Olecranon process of ulna.
ACTION
Extends elbow, extends and adducts shoulder. INNVERVATION
Radial.
Triceps Brachii (Lateral Head)
ORIGIN
Posterior proximal shaft of humerus.
INSERTION
Olecranon process of ulna.
ACTION
Extends elbow.
INNVERVATION
Radial.
Triceps Brachii (Medial Head)
ORIGIN
Posterior distal shaft of humerus.
INSERTION
Olecranon process of ulna.
ACTION
Extends elbow.
INNVERVATION
Radial.
Pronator Teres
ORIGIN
Humeral head: Medial epicondyle of humerus Ulnar head: Medial border of coronoid process of ulna. INSERTION
Lateral aspect of shaft of radius.
ACTION
Pronates forearm, assists in flexing elbow. INNVERVATION
Median.
Pronator Quadratus
ORIGIN
Medial anterior surface of distal ulna.
INSERTION
Lateral anterior surface of distal radius.
ACTION
Pronates forearm.
INNVERVATION
Median.
Supinator
ORIGIN
Lateral epicondyle of the humerus, proximal ulna, radial collateral ligament, and annular ligament. INSERTION
Lateral proximal shaft of radius.
ACTION
Supinates forearm.
INNVERVATION
Radial.
Anconeus
ORIGIN
Lateral epicondyle of humerus.
INSERTION
Olecranon process of ulna.
ACTION
Extends elbow.
INNVERVATION
Radial.
