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Muscles of the arm and shoulder - Muscles of the upper arm (1. Muscles of…
Muscles of the arm and shoulder - Muscles of the upper arm
1. Muscles of the upper arm
Ventral group
Biceps brachii
Brachialis
Dorsal group
Anconeus
Triceps brachii
2.Biceps brachii
2 Heads
Short head
Origin: Coracoid process of the scapula
Long head
Origin: Supraglenoid tubercle of the scapula
Insertion: Radial tuberosity of the radius and antebrachial fascia
3. Brachialis
Origin: Distal half of the anterior portion of the humerus and medial and lateral intermuscular septum
Insertion: Ulnar tuberosity
4. Anconeus
Origin: Lateral epicondyle of the humerus
Insertion: Olecranon
5. Triceps brachii
3 Heads
Medial head
Origin: Posterior surface of the humerus
A little bit distal from the radius groove
Insertion: Medial portion of the intermuscular septum
Lateral head
Origin: Posterior surface of the humerus and
lateral intermuscular septum
Proximal to the radial groove
Insertion: Olecranon of the ulna
Long head
Origin: Infraglenoid tubercle of the scapula