Question

In kidneys, urine is produced by three processes

A) Dialysis, ultra filtration and tubular secretion

b)Ultra filtration, dialysis and tubular secretion

c)Ultra filtration, tubular reabsorption and tubular secretion

d)Tubular reabsorption and tubular secretion​

Answer 1

answer is c) ultra filtration, tubular reabsorption and tabular secretion

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Answer 2

In kidneys, urine is produced by ultra filtration, tubular reabsorption and tubular secretion. Option (c) is correct.

Explanation:

• From the blood, kidneys helps to filter the waste substances.
• Kidney produce the urine to excrete the unwanted waste substances.
• Glomerular filtration, reabsorption and secretion are the three main steps of urine formation.
• In the process of ultra filtration, the water, sodium chloride, glucose, urea and amino acids gets filter from the blood by the basement membrane in the glomerular capsule.
• With the help of nephric filtrate, the useful substances such as glucose, water aminoacids are reabsorbed in to the blood, it is the tubular reabsorption process.
• Tubular secretion is the secretion where harmful substances like urea, drugs, etc are secreted from the blood into the nephric filtrate.

To Learn More...

1.explain the terms ultrafiltration, tubular reabsorption and tubular secretion where do these functions take place in nephron?

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2.Explain the MECHANISM OF URINE FORMATION?

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