Inferior phrenic arteries

Inferior phrenic arteries
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The abdominal aorta and its branches
(inferior phrenic arteries labeled at upper right)
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Posterior abdominal wall, after removal of the peritoneum, showing kidneys, suprarenal capsules, and great vessels
Details
SourceAbdominal aorta
BranchesSuperior suprarenal artery
VeinInferior phrenic vein
SuppliesThoracic diaphragm
Identifiers
LatinArteriae phrenicae inferiores
TA98A12.2.12.002
TA24206
FMA14734
Anatomical terminology

The inferior phrenic arteries are two small vessels which supply the diaphragm. They present much variety in their origin.

Structure

Origin

The inferior phrenic arteries usually arise between T12 and L2 vertebrae. They may arise separately from the front of the aorta, immediately above the celiac artery, or by a common trunk, which may spring either from the aorta or from the celiac artery. Sometimes one is derived from the aorta, and the other from one of the renal arteries; they rarely arise as separate vessels from the aorta.

Branches

They diverge from one another across the crura of the diaphragm, and then run obliquely upward and lateralward upon its under surface.

Function

The inferior phrenic arteries supply the diaphragm. Each of the smaller vessels give off superior supradrenal branches to the supradrenal gland of its own side. The spleen and the liver also receive a few twigs from the left and right vessels respectively.


This page was last updated at 2023-04-05 00:45 UTC. Update now. View original page.

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