Diaphragm

Description

Illustration of the diaphragm muscle

Schematic of the chest wall musculature indicating the location of muscles. Inspiratory muscles including scalenes, external intercostals, parasternal intercostals and diaphragm are drawn on the left. Expiratory muscles are drawn on the right

Origin

• Xiphoid Process (posterior aspect)
• Ribs 7-12
• Lumbar vertebrae 1-3 (right crus)
• Lumbar vertebrae 1-2 (left crus)

Insertion

• Central Tendon

Actions

• Inspiration (main inspiratory muscle)

Vascular Supply

• Inferior Phrenic Arteries
• Superior Phrenic Arteries
• Musculophrenic Arteries
• Pericardiacophrenic Arteries

Nerve

• Phrenic Nerve (C3-C5)

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Clinical Significance

• Needs to be updated

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See Also

• Pulmonology Main
• Torso Anatomy (Main)
• Chest Pain (Main)

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