Where do ultrafiltration, reabsorption and secretion occur in a nephron?
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Solution
Nephron:
A nephron is a tube-like, strongly coil-shaped structure.
It filters blood to regulate chemical concentrations of water and soluble chemicals such as sodium salts and, as a result, creates urine.
The Malpighian body, or renal corpuscle, and renal tubules make up each nephron.
Occurrence of ultrafiltration, reabsorption, and secretion:
Ultrafiltration:
Ultrafiltrationis the first step in the process of urine formation.
The glomerulus is liable for filtering the blood.
In Bowman's capsule, ultrafiltration takes place.
Reabsorption:
The glomerular filtrate reaches the renal tubule as a dilute solution in the second step of urine production, and various components present in the filtrate are reabsorbed.
The components in the filtrate are reabsorbed to the extent of .
It takes place in the Proximal Convoluted Tubule, or PCT, Henle loop, Distal Convoluted Tubule, or DCT, and collecting duct.
Secretion:
Secretion is the final step in the process of production of urine. This process removes compounds such as and certain chemicals that are not eliminated by filtration.