Arm/Elbow Flashcards
(32 cards)
Biceps Brachii Origin
Long Head: supraglenoid tubercule above the superior lip of the glenoid fossa
short head: coracoid process
Biceps Brachii Insertion
Tuberosity of the radius
Biceps Brachii Action
elbow flexion
forearm supination
shoulder horizontal adduction, flexion
NO attachment to humerus
Biceps Brachii Innervation
Musculocutaneous Nerve
Brachioradialis Origin
Distal 2/3 of the lateral supracondylar ridge of the humerus
Brachioradialis Insertion
lateral surface of the distal end of the radius at the styloid process
Brachioradialis Action
elbow flexion
forearm pronation from supination to neutral
forearm supination from pronated position to neutral
helps resist radial head subluzation
Brachioradialis Innervation
Radial Nerve
Brachialis Origin
distal 1/2 of the anterior shaft of the humerus
Brachialis Insertion
coronoid process of the ulna
Brachialis Action
Elbow Flexion
Brachialis Innervation
Musculocutaneous Nerve
Triceps Origin
Long Head: Infraglenoid tubercule below inferior lip of glenoid fossa
Lateral Head: upper 1/2 of posterior humerus
Medial Head: distal 2/3 of posterior humerus
Triceps Insertion
Olecranon Process
Triceps Action
Elbow Extension
Long Head: shoulder adduction and horizontal abduction
Triceps Innervation
Radial Nerve
Anconeus Origin
Posterior surface of the lateral condyle of the humerus
Anconeus Insertion
Posterior surface of the lateral olecranon process and proximal 1/4 of lateral ulna
Anconeus Action
Elbow extension
Anconeus Innervation
Radial Nerve
Pronator Teres Origin
Distal part of the medial supracondylar ridge of the humerus and medial side of the proximal ulna
Pronator Teres Insertion
Middle 1/3 of lateral radius
Pronator Teres Action
Forearm Pronation
Elbow Flexion
Pronator Teres Innervation
Median Nerve
