Abnormal renal vascular morphology Abnormal renal arteriole morphology 2021-06-23T22:04:04Z Any structural anomaly of the glomerular arterioles. The interlobar arteries of the kidney branch into arcuate arteries, cortical radiate arteries, and then into afferent arterioles. After passing through the renal corpuscle, the capillaries form the efferent arteriole. The afferent and efferent arterioles are difficult to distinguish histologically and are thus both included in this term and its descendents. Renal blood flow originates at the hilum of the kidney through the renal artery. From the segmental artery to the interlobar artery, blood arrives parallel to the corticomedullary junction in the arcuate artery. This gives rise to the interlobular arteries that radiate toward the surface. Afferent arterioles branch off which ultimately leads into the glomerulus of Bowman's capsule. From here, efferent arterioles begin to form the venous system and subdivide into another set of capillaries known as the peritubular capillaries. Blood then leaves the kidney and enters the venous circulation. However, efferent arterioles that are located above the corticomedullary border travel downward into the medulla. They further divide into vasa recta which surround the Loop of Henle.