Anatomy of the Kidney & Ureter
Paired Organ: Yes.
Each kidney or ureter is considered a separate primary, unless bilateral involvement is stated to be metastatic from one side to the other (exception: bilateral Wilms tumor of the kidney).
The kidneys have two functional areas that are managed and staged independently, the kidney parenchyma and the renal pelvis.
The ureters are the tubes that carry urine from the renal pelvis to the bladder. They are staged the same way as the renal pelvis.
Anatomy of the Kidney and Ureter
- Perirenal fat
- Pelvis of kidney
- Renal vessels
The solid part of the kidney, where the process of waste excretion takes place.
The outer layer of the parenchyma consisting of connective tissue.
Convoluted tubules where filtration is performed.
Area of the kidney where filtration and concentration of wastes takes place, Henle's loops, pyramids of converging tubules.
Basic functional unit of kidney.
Calyx (plural calyces)
Collecting area for urine within kidney before it is passed through to renal pelvis.
Dense fibrous covering of kidney.
Central collecting system of kidney.
Area of convergence of the renal collecting system, ureter, renal artery and vein.
Point at which the renal pelvis becomes the ureter.
Layer of connective tissue between the kidneys and the psoas muscles and the lumbar spine.
Layer of fat surrounding kidney outside of capsule.
Layer of fat in the area of the renal hilum.
Regional Lymph Nodes
|Site||Regional Lymph Nodes|
|Kidney||Para-aortic, paracaval, renal hilar nodes|
|Renal pelvis, ureter||Renal hilar, abdominal para-aortic, paracaval, common iliac, internal iliac, external iliac|