Renal circulation
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2. Efferent artery
3. Renal artery
4. Renal vein
5. Renal hilum
6. Renal pelvis
7. Ureter
8. Minor calyx
9. Renal capsule
10. Inferior renal capsule
11. Superior renal capsule
12. Afferent vein
13. Nephron
14. Minor calyx
15. Major calyx
16. Renal papilla
17. Renal column
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The renal circulation receives around 20% of the cardiac output. It branches from the abdominal aorta and returns blood to the ascending vena cava. It is the blood supply to the kidney, and contains many specialized blood vessels.
Circulation
The table below shows the path that blood takes when it travels through the glomerulus, traveling "down" the arteries, and "up" the veins. However, this model is greatly simplified for clarity and symmetry. Some of the other paths and complications are described at the bottom of the table.
| Arteries (down) | Veins (up) |
| Abdominal aorta | Vena cava |
| Renal artery (Note 1) | Renal vein |
| Segmental arteries | - |
| Lobar arteries | - |
| Interlobar artery | Interlobar vein |
| Arcuate arteries (Note 2) | Arcuate vein |
| Interlobular artery (Note 3) | Interlobular vein |
| Afferent arterioles | Efferent arterioles (Note 4) |
| Glomerulus | Glomerulus |
- Note 1: The renal artery also provides a branch to the inferior suprarenal artery to supply the adrenal gland.
- Note 2: The arcuate arterioles also supply blood to the vasa recta. The vasa recta supplies blood to the arcuate veins, thus bypassing the glomerulus.
- Note 3: The interlobular artery also supplies to the stellate veins.
- Note 4: The efferent arterioles don't directly drain into the interlobular vein, but rather they go to the peritubular capillaries first. The efferent arterioles also drain into the vasa recta.
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Acknowledgement and Attribution Regarding Sources of Content
Some of the initial content on this page may be incorporated in part from copyleft sources in the public domain including wikis such as Wikipedia and AskDrWiki. Drug information for patients came from the The National Library of Medicine. Infectious disease information may have come from the Centers for Disease Control (CDC). Differential Diagnoses are drawn from clinicians as well as an amalgamation of 3 sources: 1.The Disease Database; 2. Kahan, Scott, Smith, Ellen G. In A Page: Signs and Symptoms. Malden, Massachusetts: Blackwell Publishing, 2004:3; 3. Sailer, Christian, Wasner, Susanne. Differential Diagnosis Pocket. Hermosa Beach, CA: Borm Bruckmeir Publishing LLC, 2002:7 .
