PP1.H1.8 Blood Vessels of Kidney
Blood Vessels of Kidney:
- The renal artery divides into lobar arteries (usually prior to entering the hilus of the kidney)
- Each lobar artery supplies a single lobe of the kidney and is therefore an end artery
- Name another structure in the body where you find end arteries
- Arcuate arteries pass along the junction between the cortex and medulla
- They give branches which supply capillary networks around individual nephrons
- Afferent arterioles (branches from the arcuate arteries) deliver blood to the glomerulus of a renal corpuscle
- The glomerulus is drained by an efferent arteriole
- This arrangement of arteriole - capillary - arteriole is unique to the kidney and allows a high pressure to be create within the capillaries of the glomerulus hence promoting filtration of the blood
- Branches from the arcuate artery feed capillaries which loop down into the medulla in parallel with the loops of Henle and collecting ducts
- These loops of capillaries are known as the vasa recta
Questions:
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