Inferior phrenic arteries
4484527
152782024
2007-08-21T21:56:11Z
Arcadian
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infobox
{{Infobox Artery |
Name = {{PAGENAME}} |
Latin = arteria phrenica inferior |
GraySubject = 154 |
GrayPage = 612 |
Image = Gray531.png |
Caption = The [[abdominal aorta]] and its branches. (Inferior phrenic arteries labeled at upper right.) |
Image2 = Gray1121.png |
Caption2 = Posterior abdominal wall, after removal of the peritoneum, showing kidneys, suprarenal capsules, and great vessels. |
BranchFrom = [[abdominal aorta]] |
BranchTo = [[superior suprarenal artery]] |
Vein = [[inferior phrenic vein]] |
Supplies = [[thoracic diaphragm]] |
MeshName = |
MeshNumber = |
DorlandsPre = a_61 |
DorlandsSuf = 12155488 |
}}
The '''inferior phrenic arteries''' are two small vessels, which supply the [[diaphragm (anatomy)|diaphragm]] but present much variety in their origin.
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.
They diverge from one another across the [[crura of the diaphragm]], and then run obliquely upward and lateralward upon its under surface.
* The ''left phrenic'' passes behind the [[esophagus]], and runs forward on the left side of the [[esophageal hiatus]].
* The ''right phrenic'' passes behind the [[inferior vena cava]], and along the right side of the [[Caval opening|foramen which transmits that vein]].
Near the back part of the [[central tendon]] each vessel divides into a medial and a lateral branch.
* The ''medial branch'' curves forward, and anastomoses with its fellow of the opposite side, and with the [[musculophrenic]] and [[pericardiacophrenic]] arteries.
* The ''lateral branch'' passes toward the side of the thorax, and anastomoses with the [[lower intercostal]] arteries, and with the [[musculophrenic]]. The lateral branch of the right phrenic gives off a few vessels to the [[inferior vena cava]]; and the left one, some branches to the [[esophagus]].
Each vessel gives off [[superior suprarenal branches]] to the [[suprarenal gland]] of its own side. The [[spleen]] and the [[liver]] also receive a few twigs from the left and right vessels respectively.
==External links==
* {{SUNYAnatomyLabs|40|11|02|00}} - "Posterior Abdominal Wall: Branches of the Abdominal Aorta"
* {{ViennaCrossSection|pembody/body8a}} (#23)
{{Gray's}}
{{circulatory-stub}}
{{Arteries of thorax and abdomen}}