Filtration of blood during urine formation takes place in
- Glomerulus
- DCT
- PCT
- Collecting duct
The Correct Option is A
Approach Solution - 1
The glomerulus is a network of tiny blood vessels located within the kidney's nephrons. It is the initial site of blood filtration in the kidney. Blood pressure forces fluid and small solutes, such as water, electrolytes, and waste products, out of the glomerular capillaries and into the Bowman's capsule, which surrounds the glomerulus.
This process is known as glomerular filtration and is the first step in urine formation. The filtered fluid, known as the glomerular filtrate, then undergoes further processing in the renal tubules, including reabsorption and secretion, to eventually form urine.
Therefore, the correct answer is (A) Glomerulus.
Approach Solution -2
The correct answer is:
Option 1: Glomerulus
Explanation:
The filtration of blood during urine formation occurs in the glomerulus, which is a network of capillaries located inside the Bowman’s capsule of the nephron. This process is called glomerular filtration and is the first step in urine formation.
Why is the glomerulus responsible for filtration?
The glomerular capillaries have fenestrations (pores) that allow small molecules like water, glucose, salts, and waste products (like urea) to pass through.
Larger molecules such as proteins and blood cells are retained in the bloodstream because they are too large to pass through the filtration membrane.
The filtered fluid, called glomerular filtrate, enters the Bowman’s capsule and moves through the nephron for further processing.
Why are the other options incorrect?
DCT (Distal Convoluted Tubule) (Option 2):
Involved in reabsorption and secretion, but not blood filtration.
PCT (Proximal Convoluted Tubule) (Option 3):
Reabsorbs essential substances like glucose, amino acids, and ions but does not perform filtration.
Collecting Duct (Option 4):
Concentrates urine by absorbing water but does not filter blood.
Conclusion:
Since the glomerulus is the primary site of blood filtration in the kidney, the correct answer is Option 1: Glomerulus.
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