Muscles of the Arm Flashcards
Proximal Attachment: coracoid process
Distal Attachment: middle, medial humerus
Coracobrachialis
What are the 2 actions of coracobrachialis?
1) G-H Adduction
2) G-H Flexion (weak)
Proximal Attachment: supraglenoid tubercle (long head) and coracoid process (short head)
Distal Attachment: radial tuberosity and bicipital aponeurosis
Biceps Brachii
What are the 3 actions of biceps brachii?
1) G-H Flexion
2) Elbow Flexion
3) Forearm Supination
Which muscle is the prime mover for elbow flexion in supination?
Biceps Brachii
The long head tendon of biceps brachii has a sheath to protect it from the __________ _______ ligament.
Transverse Humeral
When the forearm is ________, the biceps muscle wraps more than half way around the radius and the radial tuberosity is now _________.
Pronated
Posterior
Fascia that runs from the biceps tendon across the cubital fossa and merges with the deep fascia of the anterior forearm.
Bicipital Aponeurosis
Proximal Attachment: anterior, distal 1/2 of humerus
Distal Attachment: ulnar tuberosity and coronoid process
Brachialis
What is the action of brachialis?
Elbow Flexion
Which muscle is the prime mover for elbow flexion in pronation?
Brachialis
Proximal Attachment: infraglenoid tubercle (long head), posterior, proximal humerus, which is superior to radial groove (lateral head) and posterior, distal humerus, which is inferior to radial groove (medial head)
Distal Attachment: olecranon process
Triceps Brachii
What is the action of triceps brachii?
Elbow Extension
What is the action of the long head of triceps brachii?
G-H Extension
The long head of triceps brachii travels between _____ _____ and _____ _____.
Teres Major
Teres Minor
