The tubule associated with Bowman’s capsule is called proximal convoluted tubule. Its length is about 14 cm and diameter is 57-60μ. These peritubules are covered by epithelial cells with capillaries or brush borders. At one end of the cells are numerous microscopic finger-like projections or microvilli. It is located in the cortex. This duct carries the filtrate from the glomerulus to the loop of Henley. The proximal tubule reabsorbs water, sodium ions, potassium, amino acids, glucose, chloride, peptide creatine and bicarbonate ions from the glomerular filtrate.