Kidney Tubule Transport in the Nephron

Kidney tubule transport in the nephron changes the fluid that leaves the glomerulus. Once this fluid enters the proximal convoluted tubule, it is called filtrate. Its composition shifts as the tubule reabsorbs useful substances and secretes unwanted ones.

Tubular reabsorption is a selective proce...

Tubular reabsorption occurs along the length of the renal tubules and collecting ducts. This process returns water and solutes from the filtrate to the blood.

It is essential for maintaining blood volume and regulating the electrolyte balance of the body.

During reabsorption, substances pass from the tubular fluid into the blood ca...