Diaphragm Muscle
Origin: Attaches to the xiphoid process, the inner surface of the lower six costal cartilages and to the L1 through the L3 lumbar vertebrae
Insertion: Attaches to the central aponeurotic tendon
Actions: Inspiration and forced inspiration
Innervation: Phrenic nerve (C3, C4, C5)
Blood Supply: Pericardiacophrenic, Musculophrenic, Superior phrenic, and Inferior phrenic arteries
Primary Actions of the Diaphragm
1. Inspiration
Agonists:
- External Intercostals
- Serratus Posterior Superior
Antagonists:
- Internal Intercostals
- Transversus 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
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Muscle Pain Information: The diaphragm muscle contributes to pain in the chest, rib cage, and can affect breathing.
An excellent book for those beginning the study of anatomy. Coloring helps memory retention.
For intermediary anatomy students learning skeletal and muscle structure.
For beginning and intermediary anatomy . Muscle overlays on the human body. Excellent visuals!