Nyreutløpet

Nyreutløpet, also known as the renal pelvis, is a funnel-shaped structure within the kidney that collects urine from the nephrons. It is formed by the convergence of the major calyces, which in turn receive urine from the minor calyces. The nyreutløpet acts as a conduit, channeling the urine from the kidney towards the ureter, the tube that carries urine to the bladder.

The inner lining of the nyreutløpet is composed of transitional epithelium, which is capable of stretching to accommodate the flow of urine. This lining also secretes mucus, which helps to protect the urothelial lining from the abrasive effects of urine. The muscular walls of the nyreutløpet contract rhythmically, creating peristaltic waves that propel urine down the ureter.

Conditions affecting the nyreutløpet can include infections (pyelonephritis), stones (nephrolithiasis), and tumors. Inflammation of the nyreutløpet can lead to pain, fever, and other symptoms. Blockage of the nyreutløpet by stones or other obstructions can cause hydronephrosis, a condition where urine backs up into the kidney, potentially leading to kidney damage. The nyreutløpet is an essential component of the urinary system, playing a vital role in the efficient removal of waste products from the body.