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Coracobrachialis Anatomy: Origin, Insertion, Action



O, I, A of the Coracobrachialis

Origin: Lateral aspect of the apex of the coracoid process of the scapula
Insertion: Medial aspect of the mid shaft of the humerus
Actions: Flexion of the arm at the shoulder
Innervation: Musculocutaneous nerve (C5 C6 C7)
Vascular Supply: Muscular branches from the superior and inferior epigastric arteries

Primary Actions of the Coracobrachialis:

1. Flexion of the arm at the shoulder


  • Deltoid (anterior part)
  • Biceps Brachii
  • Pectoralis Major (clavicular head)


  • Deltoid (posterior part)
  • Triceps Brachii (long head)
  • Latissimus Dorsi
  • Pectoralis Major (sternal head)
  • Teres Major


Secondary Actions of the Coracobrachialis:

1. Assists with adduction of the arm at the shoulder


  • Latissimus Dorsi
  • Teres Major
  • Pectoralis Major
  • Triceps Brachii (long head)


  • Deltoid (middle part)
  • Supraspinatus

Information about cause and effect of coracobrachialis pain:

Coracobrachialis Muscle: Arm, Shoulder and Hand Pain

Basic Clinical Massage Therapy


Out of the scores of books in my office Basic Clinical Massage Therapy is by far the most referenced book in my library. The musculoskeletal system is overlaid on human models allowing you to learn the precise location, origin and insertions of each muscle. The models are pictured in various poses throughout the book which also helps you visualize muscles in motion and their actions relationship with the skeletal structure and other muscles. Though it is written for massage therapists, it is an excellent book for anyone who wants to learn about the muscular system. MT's will benefit from recommended treatments for each muscle.

Musculoskeletal Anatomy Flashcards

Musculoskeletal Anatomy Flashcards Musculoskeletal Flashcards Are you a student or professional therapist who needs to brush up on the musculoskeletal system? Dr. Joseph E. Muscolino DC has developed a comprehensive set of flashcards that will help develop a mind's picture of exactly where the muscles lie under the skin. A highly recommended study aid for students. Great for non students who want an easy comprehensive anatomy guide.





The Trigger Point Therapy Workbook – Claire Davies, Amber Davies, and David G. Simons

Basic Clinical Massage Therapy: Integrating Anatomy and Treatment – James H. Clay and David M. Pounds

Trigger Point Therapy for Myofascial Pain – Donna Finando and Steven Finando