Diaphragm

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6 Cards. Created by RW ().
 
Term  
Definition

Description

The diaphragm is a thin musculotendinous structure that fills the inferior thoracic aperture and separates the thoracic cavity from the abdominal cavity.

Peripheral attachments

Xiphoid process of sternum; Costal margin of the thoracic wall; Ends of ribs 11 and 12; Ligaments that span across structures of the posterior abdominal wall; Vertebrae of the lumbar region.

Central attachments

From its peripheral attachments, muscle fibers converge to form a central tendon; The pericardium is attached to the middle part of the central tendon.

Posterior attachments

Median arcuate ligament.

Nerve supply

Phrenic nerves (C3, C4, C5).

Action

Increases the volume of the thorax.