Through which opening of the diaphragm does the inferior vena cava pass?

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Multiple Choice

Through which opening of the diaphragm does the inferior vena cava pass?

Explanation:
The inferior vena cava passes through the caval opening in the central tendon of the diaphragm. This opening is located at about the level of T8 and is the route for venous return from the abdomen to the heart, usually accompanied by the right phrenic nerve. In contrast, the esophageal hiatus (T10) transmits the esophagus, and the aortic hiatus (T12) transmits the aorta (the latter formed by the crura and the median arcuate ligament). The median arcuate ligament itself forms a fibrous arch, not a separate primary opening for the IVC. Therefore, the correct route for the inferior vena cava is the caval opening.

The inferior vena cava passes through the caval opening in the central tendon of the diaphragm. This opening is located at about the level of T8 and is the route for venous return from the abdomen to the heart, usually accompanied by the right phrenic nerve. In contrast, the esophageal hiatus (T10) transmits the esophagus, and the aortic hiatus (T12) transmits the aorta (the latter formed by the crura and the median arcuate ligament). The median arcuate ligament itself forms a fibrous arch, not a separate primary opening for the IVC. Therefore, the correct route for the inferior vena cava is the caval opening.

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