Gerota’s fascia is a thin, fibrous tissue on the outside of the kidney. Below Gerota’s fascia is a layer of fat.
The renal capsule is a layer of fibrous tissue that surrounds the body of the kidney inside the layer of fat.
The cortex is the tissue just under the renal capsule.
The medulla is the inner part of the kidney.
The renal pelvis is a hollow area in the centre of each kidney where urine (pee) collects.
The renal artery brings blood to the kidney.
The renal vein takes blood back to the body after it has passed through the kidney.
The renal hilum is the area where the renal artery, renal vein and ureter enter the kidney.
The nephrons are the millions of small tubes inside each kidney. Each nephron has 2 parts. Tubules are tiny tubes that collect the waste materials and chemicals from the blood moving through the kidney. The corpuscles contain a clump of tiny blood vessels called glomeruli that filter the blood as it moves through the kidney. The waste products are passed through the tubules to the collecting ducts, which drain into the renal pelvis.
What the kidneys do @(Model.HeadingTag)>
The main function of the kidneys is to filter water, impurities and wastes from the blood.
The blood from the body enters the kidneys through the renal arteries. Once in the kidney, the blood passes through the nephrons, where waste products and extra water are removed. The clean blood is returned to the body through the renal veins.
The waste products filtered from the blood are then concentrated into urine. The urine is collected in the renal pelvis. The ureters move the urine to the bladder, where it is stored. Urine is passed out of the bladder and the body through the urethra.
The kidneys also act as endocrine glands. They make these
- Erythropoietin (EPO) stimulates the bone marrow to make red blood cells.
- Calcitriol, a form of vitamin D, helps the colon absorb
calciumfrom the diet.
- Renin helps control blood pressure.