Brachial (Arm) Muscles
Biceps Brachii Innervation
musculocutaneous
Triceps Brachii Artery
branch of profunda brachi artery
Brachialis Insertion
coronoid process and tuberosity of ulna
Brachialis Origin
distal half of anterior surface of humerus; intermuscular septa
Anconeus Action
extends forearm
Triceps Brachii Action
extends forearm at elbow; long head also extends arm
Coracobrachialis Action
flexes and adducts arm at shoulder
Biceps Brachii Action
flexes and supinates forearm at elbow; flexes arm
Brachialis Action
flexes forearm at elbow
Anconeus Origin
lateral epicondyle of humurus
Anconeus Insertion
lateral side of olecranon; upper posterior surface of ulna
Triceps Brachii Origin
long head: infraglenoid tubercle of scapula; lateral head: upper 1/2 of posterior humerus above and lateral to groove of radial nerve; medial head: posterior surface of humerus below and medial to the groove of the radial nerve
Biceps Brachii Origin
long head: supraglenoid tubercle of scapula; short head: tip of coracoid process of scapula
Coracobrachialis Insertion
middle 3rd of medial surface of humerus
Biceps Brachii Artery
muscular branches of brachial artery
Coracobrachialis Artery
muscular branches of brachial artery
Coracobrachialis Innervation
musculocutaneous
Brachialis Innervation
musculocutaneous; lateral side may receive twig from radial
Triceps Brachii Insertion
posterior surface of olecranon process of ulna
Anconeus Innervation
radial
Triceps Brachii Innervation
radial nerve
Brachialis Artery
radial recurrent artery; muscular branches of brachial artery
Biceps Brachii Insertion
radial tuberosity; fascia of forearm via bicipital aponeurosis
Coracobrachialis Origin
tip of coracoid process of scapula