Which is the insertion of the diaphragm?

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Multiple Choice

Which is the insertion of the diaphragm?

Explanation:
The key idea is where the diaphragm’s muscle fibers attach—the insertion. All the diaphragmatic fibers converge into a broad, central aponeurotic tendon. That central tendon is the insertion point for the diaphragmatic muscles as they contract to flatten the diaphragm and enlarge the thoracic cavity during inhalation. The inner surfaces of the lower six ribs are where the costal part originates, not where it inserts. The anterior iliac crest and pubic crest are pelvic landmarks and not related to the diaphragm’s insertion.

The key idea is where the diaphragm’s muscle fibers attach—the insertion. All the diaphragmatic fibers converge into a broad, central aponeurotic tendon. That central tendon is the insertion point for the diaphragmatic muscles as they contract to flatten the diaphragm and enlarge the thoracic cavity during inhalation. The inner surfaces of the lower six ribs are where the costal part originates, not where it inserts. The anterior iliac crest and pubic crest are pelvic landmarks and not related to the diaphragm’s insertion.

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