where does fertilization occur in the nephron?
Fluid later passes from the distal tubule to the collecting ducts. Ultra filtration occurs in the cortex in the cortical collecting ducts, which is the last process of the nephron. The urine then passes through the collecting ducts through the drainage system of the kidney to the ureters and bladder for urination.T he counter current system is similar to the nephron because the loop of henle is to be able to create dilute urine or concentrated urine depending on what the body wants and needs.he urine then passes through the collecting ducts through the drainage system of the kidney to the ureters and bladder for urination. T he counter current system is similar to the nephron because the loop of henle is to be able to create dilute urine or concentrated urine depending on what the body wants and needs.