The diaphragm is a large, dome-shaped muscle that separates the thoracic cavity from the abdominal cavity. The diaphragm consists of muscle fibers and a large central tendon, which is divided into right and left parts. As the primary muscle of inspiration Inspiration Ventilation: Mechanics of Breathing, the diaphragm contributes 75% of the total inspiratory muscle force, and its contraction leads to flattening of the dome of the diaphragm. This flattening increases the volume of the thoracic cavity and allows the lungs Lungs Lungs are the main organs of the respiratory system. Lungs are paired viscera located in the thoracic cavity and are composed of spongy tissue. The primary function of the lungs is to oxygenate blood and eliminate CO2. Lungs: Anatomy to expand during inspiration Inspiration Ventilation: Mechanics of Breathing.
Last updated: Aug 11, 2022
The diaphragm consists of 3 parts, all of which insert into the central tendon.
|Vena caval foramen||At level of T8–T9|
|Esophageal hiatus||At level of T10||
|Aortic hiatus||At level of T12|
Minor diaphragmatic foramina (openings):
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