Extensor Carpi Ulnaris Anatomy: Origin, Insertion, Action, Innervation

Extensor Carpi Radialis Brevis Anatomy Study

Extensor Carpi Ulnaris Anatomy

Origin: Lateral epicondyle of humerus via the common extensor tendon.
Insertion: Tubercles on the medial side of the base of the fifth metacarpal
Action: Extension of the wrist
Innervation: C6,7,8 Radial Nerve
Blood Supply: Posterior interosseous artery from the ulnar artery
For pain and symptom information see: Extensor Carpi Ulnaris Muscle Pain

Primary Action of the Extensor Carpi Radialis Brevis:

1. Extension of the wrist.

  • Agonists: Extensor carpi radialis longus, extensor carpi brevis
  • Antagonists: Flexor Carpi Radialis Longus,  Flexor Carpi Ulnaris, Palmaris Longus

2. Ulnar deviation of the wrist

  • Agonists: Flexor Carpi Ulnaris
  • Antagonists: Extensor Carpi Radialis Longus, Extensor Carpi Radialis Brevis, Flexor Carpi Radialis





Learn Human Anatomy

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The Anatomy Coloring Book is one of the best study and reference books for beginning anatomy students. The diagrams are clearly labeled and allow you to see the relationship and placement of the various structures of the body. You will also be surprised how the act of coloring will help with recall. But this is not just a beginners book, it is also great for practitioners and therapists to have on hand to use with clients and patients to use as a visual reference.

Basic Clinical Massage Therapy

basic_clinical_massa

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.

 

References:

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