1 Strenuous exercise, such as running a marathon, can also cause blood in the urine. 2  White blood cells may be a sign of infection or kidney disease. 3  Casts. 4  Some types of kidney disease can cause plugs of material (called casts) to form in tiny tubes in the kidneys.
A loop of Henle can be found in one of the hundreds of thousands of nephrons contained within the kidneys. The loop of Henle dips down from the nephron into the medulla and then back into the cortex. The loop of Henle is part of a nephron, a tiny tube inside the kidneys that filters solutes. The loop of Henle allows the kidneys to maintain the correct balance of water in the body.
The main function of the proximal tubule is to reabsorb the water and solutes, as well as secrete the hydrogen ions to create a neutral blood composition. Loop of Henle The loop of Henle is the tubular portion of the nephron that lies between the proximal tubule and the distal tubule.The main function of the loop of Henle is to allow the reabsorption of the water and ions, such as sodium and chlorine, from the loop of Henle into the capillaries surrounding it.he main function of the proximal tubule is to reabsorb the water and solutes, as well as secrete the hydrogen ions to create a neutral blood composition. Loop of Henle The loop of Henle is the tubular portion of the nephron that lies between the proximal tubule and the distal tubule.