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image: Triceps Brachii − Long Head
Triceps Brachii − Long Head

Triceps Brachii − Long Head

 Articulations :

 Action :

  • Chief extensor of forearm.
  • Long head steadies head of abducted humerus.

Origin :

  • Long head: Infraglenoid tubercle of scapula.

Insertion :

  • Proximal end of olecranon process of ulna and fascia of forearm.

Innervation :

  • Radial nerve (C6, C7 and C8).

Arterial Supply :

  • Branches of deep brachial artery.

Depth :

  • Superficial
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