Biceps Brachii

• O (origin):

  Long head:

  • supraglenoid tubercle of scapula

  A) Biceps brachii

  B) long

  
• O (origin):

  Short head:

  • apex of coracoid process of scapula (along with coracobrachialis)

  A) Biceps brachii

  B) short

  
• R (direction):

  • Downwards (muscle bellies merge mid-humerus)

  A) Biceps brachii

  
• I (insertions):

  • Posterior aspect of radial tuberosity on radius via flat tendon and bicipital aponeurosis

  A) Biceps brachii

  
• A (actions):

  • Powerful supinator (with flexed elbow)
  • Elbow flexor
  • Flexor of Glenohumeral joint

  A) Biceps brachii

  
• NS (nerve supply):

  • Musculocutaneous nerve (C5 - C7)

  A) Biceps brachii