Inferior Phrenic Arteries: Crucial Vessels for Diaphragm Function
The inferior phrenic arteries, crucial for diaphragm function, exhibit variable origins and extensive branching. They supply blood to the diaphragm, suprarenal gland, and nearby organs, with their paths marked by notable anatomical relationships.
The inferior phrenic arteries can stem from the aorta, celiac artery, or a shared trunk. Typically, they originate from the abdominal aorta or the celiac trunk, contributing to the vascular network of the liver and sometimes the pelvic floor.
These arteries run upward and laterally on the underside of the diaphragm's crura, dividing into medial and lateral branches at the central tendon. They supply blood to the diaphragm and give rise to the superior suprarenal branches, nourishing the suprarenal gland. Notably, one of these arteries may also arise from the renal arteries.
The left inferior phrenic artery traverses behind the esophagus, while the right one passes behind the inferior vena cava. Small branches may extend to the spleen and liver, demonstrating the wide-reaching influence of these vessels.
The inferior phrenic arteries, with their diverse origins and extensive branching, play a pivotal role in the vascular supply of the diaphragm and adjacent organs. Their strategic positioning and relationships with nearby structures highlight their importance in maintaining overall bodily function.
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