Inferior phrenic arteries

Inferior phrenic arteries
The abdominal aorta and its branches
(inferior phrenic arteries labeled at upper right)
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 artery is a bilaterally paired artery of the abdominal cavity which represents the main source of arterial supply to the diaphragm. Each artery usually arises either from the coeliac trunk or the abdominal aorta, however, their origin is highly variable and the different sites of origin are different for the left artery and right artery. The superior suprarenal artery is a branch of the inferior phrenic artery.

Structure

Origin

The inferior phrenic arteries vary considerably in their site of origin.[1] typically arise from either the coeliac trunk or (the anterior aspect of[1]) abdominal part of aorta (just superior to the coeliac trunk[1]); the two arteries arise either separately or as a common trunk.[2] The inferior phrenic arteries usually arise at the level corresponding to between T12 and L2 vertebrae.[3]

The right inferior phrenic artery may less often arise from the right renal artery, left gastric artery, hepatic artery proper.[2]

The left inferior phrenic artery may less often arise from either renal artery, left gastric artery, or hepatic artery proper.[2]

Course and relations

The artery courses beneath the posterior portion of the parietal peritoneum.[4] Each artery passes superoanteriorly and laterally to reach[2][4] and cross the crura of diaphragm,[4] passing close to the medial border of the ipsilateral suprarenal gland.[2]

Termination

Each artery splits into a medial branch and a lateral branch near the posterior border of the central tendon of diaphragm.[2] Alternatively, it may terminate by trifurcating into an anterior, a middle, and a posterior branch.[4]

Left inferior phrenic artery

The left phrenic passes posterior the esophagus,[2] then anterior-ward upon the left side of the esophageal hiatus,[1] past the left side of the oesophageal hiatus.[2]

Right inferior phrenic artery

The right phrenic passes posterior to the inferior vena cava. It passes past the right side of the caval opening.[2]

Branches

Distribution

The inferior phrenic arteries are the main source of arterial supply to the diaphragm.[2]

Each of the smaller vessels give a superior suprarenal artery to the ipsilateral supradrenal gland. The spleen and the liver also receive a few twigs from the left and right vessels respectively.[1]

References

  1. ^ a b c d e f g Gray, Henry (1918). Gray's Anatomy (20th ed.). p. 612.
  2. ^ a b c d e f g h i j Standring, Susan (2020). Gray's Anatomy: The Anatomical Basis of Clinical Practice (42th ed.). New York. p. 1042. ISBN 978-0-7020-7707-4. OCLC 1201341621.{{cite book}}: CS1 maint: location missing publisher (link)
  3. ^ Hiwatashi, Akio; Yoshida, Kisaku (September 2003). "The origin of right inferior phrenic artery on multidetector row helical CT". Clinical Imaging. 27 (5): 298–303. doi:10.1016/s0899-7071(02)00553-3. ISSN 0899-7071. PMID 12932678.
  4. ^ a b c d "inferior phrenic artery - Dictionnaire médical de l'Académie de Médecine". www.academie-medecine.fr. Retrieved 2024-08-07.