Question

Human Physiology

Describe the pathway of filtrate flow through the urinary system, beginning at the renal corpuscle and ending with elimination from the body. Include in your description the locations where the three major processes occur, and the names and locations of the associated capillaries.

Answer 1

The pathway of filtrate in urinary system is as follows-

1. Firstly, filtrate is formed from glomerulus and moves into Bowman's capsule. Glomerulus is a tuft of capillaries formed by afferent and efferent arterioles. The process of Filtration occur in bowman's capsule.

2. From Bowman's capsule, filtrate moves to proximal convulatory tubule and then into loop of henle. The process of reabsorption occur in PCT. Also , substances like urea and creatinine are secreted into the PCT.

3. Then fluid passes to distal convulated tubule and then into collecting duct. Reabsorption of water and secretion of potassium and hydrogen ions are done here.

4. After collecting duct, the filtrate moves through following structures in sequence- minor calyx, major calyx, renal pelvis, ureter , urinary bladder.

5. Urine finally moves out of body through urethra.