Urine formation
The kidney filters unwanted substances from our blood and produce urine that excrete them outside our body. There are three main steps involved during urine formation :- glomerular filtration, secretion and reabsorption These processes ensures that the only waste and excess water are removed from our body.
It involves three types of process
The kidney filters unwanted substances from our blood and produce urine that excrete them outside our body. There are three main steps involved during urine formation :- glomerular filtration, secretion and reabsorption These processes ensures that the only waste and excess water are removed from our body.
- Ultrafiltration or Glomerular filtration:- Filtration of blood consisting urea, ion, glucose, water etc takes place at glomerulus. After filtration filtrate will reach to PCT (proximal convulated tubule).
- Reabsorption :- It is occur in the renewal tubules where excess ions and water are Reabsorped again in the unfavorable condition.
- Secretion:- Tubular cells secretes H+, K+ ammonal into filtrate because to maintain the concentration of urine.
The rate of urine formation is 125ml/min. Body filtres 180L blodd per day. Approximately 1.5L urine is formed per day.
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