Blood Supply of Kidney | The University Of Western Ontario - Edubirdie

University:
The University Of Western Ontario
Course:
Biology 2290F | Scientific Method in Biology
Academic year:

2022
Views:

343

Pages:

3
Author:

Kyuwon J.

Blood supply of Kidney ● Arterial Supply ○ renal artery rise laterally form abdominal aorta ■ below origin of superior mesenteric artery ■ located on vertebral L1-L2 ○ right renal artery tends to be longer ■ passes posterior on inferior vena cava (IVC) ○ Left renal artery tends to be shorter slightly higher than right ○ arteries enter on kidney through hilum ■ posterior on renal veins ■ Anterior to renal pelvis ● Segmental pattern ○ prior for entering hilum renal artery divides into five segmentation of arteries ■ end arteries ■ no anastomoses between => segmental infarction possible ● superior segmental artery ● Anterosuperi segmental artery ● Aneroinferior segmental artery ● Inferior segmental artery ● Posterior segmental artery ○ could be often arise separately posterior to the pelvis Since these are end arteries… ● Ligation or occlusions on one segmental branch may lead to ischemic necrosis of renal segments ● critical while in partial nephrectomy/ segmental receptions Intrarenal Courses ● Segmental arterises ○ within renal sinus ○ supplying specific renal segments ● Interlobar arteries ○ Between renal pyramids in renal columns ○ Base => corticomedullary junctions ● Arcuate arteries ○ curves on criticomedullary junctions ■ Arching over pyramids ○ division on cortex and medullary zones ● Interlobular arteries ○ Radiating outward to arcuate arteries => capsules ○ Supplying cortical tissue+ glomeruli ● Afferent arterioles ○ From interlobular arteries ○ glomerular capillary tufts in renal corpuscles Arterial Abdominal aorta => Renal artery => Segmental => Interlobar => Arcuate => Interlobular => Afferent arterioles => Glomerular capillaries => Efferent arterioles => Peritubula capillary / Vasa recta Venous Peritubular capillaries / Vasa recta => Interlobular vein => arcuate => Interlobular => Renal vein => Inferior vena cava

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