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Diaphragm Muscle Anatomy: Origin, Insertion, Action and Innervation

Diaphragm Muscle Anatomy Study: Origin, Insertion, Action and Innervation

Diaphragm Muscle
Origin: Attaches to the sternum and xiphoid process anteriorly, the L1 through the L3 lumbar vertebrae and the arcuate ligaments posteriorly, and the costal margin peripherally.
Insertion: Attaches to the central aponeurotic tendon
Action: Inspiration
Innervation: Phrenic, inferior phrenic, subcostal and inferior six – seven intercostal nerves.
Blood Supply: Pericardiacophrenic, musculophrenic superior phrenic and inferior phrenic arteries.

For pain and symptom information see: Diaphragm: Chest Pain, Rib Pain, Difficulty Breathing

Primary Action of the Diaphragm Muscle

1. Inspiration

  • Agonists: External Intercostals and Serratus Posterior Superior
  • Antagonists: Internal Intercostals, Ttransversus Thoracis, Internal Oblique, External Oblique, Rectus Abdominis

2. Forced Inspiration

  • Agonists: Pectoralis Minor, Pectoralis Major, External Intercostals, Scalenes, Serratus Posterior Superior
  • Antagonists: Internal Intercostals, Transversus Thoracis, Internal Oblique, External Oblique, Rectus Abdominis

 
Learn Anatomy With These Aids

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. coloring_book

 

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.


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

Massage Therapy Principles and Practice – Susan Salvo

Theory & Practice of Therapeutic Massage – Mark Beck

 

 

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