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Coracobrachialis Anatomy: Origin, Insertion, Action

Coracobrachialis Anatomy Study

Coracobrachialis Anatomy

Origin: Lateral aspect of the apex of the coracoid process of the scapula
Insertion: Medial aspect of the mid shaft of the humerus
Action: Flexion of the arm at the shoulder
Blood Supply: Muscular branches from the brachial artery
Innervation: Musculocutaneous nerve (C5,6,7)

Synergist: Biceps Brachii, Anterior Deltoid, Pectoralis Major

Antagonist: Posterior Deltoid, Triceps Brachii (long head), Latissimus Dorsi, Teres Major

For Pain and Symptom Information See:  Coracobrachialis Shoulder, Arm and Hand Pain



Primary Actions of the Coracobrachialis:

1. Flexion of the arm at the shoulder

  • Agonists: Deltoid (anterior part), Biceps Brachii, Pectoralis Major (clavicular head)
  • Antagonists: Deltoid (posterior part), Triceps Brachii (long head), Latissimus Dorsi, Pectoralis Major (sternal head), Teres Major

Secondary Actions of the Coracobrachialis

2. Assists with adduction of the arm at the shoulder

  • Agonists: Latissimus Dorsi, Teres Major, Pectoralis Major,  Triceps Brachii (long head)
  • Antagonists: Deltoid (middle part), Supraspinatus

Anatomy Learning Aids

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


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