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प्रश्न
Explain the structure of nephron.
उत्तर
Each kidney consists of more than one million nephrons. Nephrons or uriniferous tubules are structural and functional units of the kidneys. Each nephron consists of Renal corpuscle or Malphigian corpuscle and renal tubule. The renal corpuscle consists of a cup-shaped structure called Bowman’s capsule containing a bunch of capillaries called glomerulus.
Blood enters the glomerular capillaries through afferent arterioles and leaves out through efferent arterioles. The Bowman’s capsule continues as the renal tubule which consists of three regions proximal convoluted tubule, U-shaped hairpin loop, the loop of Henle and the distal convoluted tubule. The distal convoluted tubule which opens into the collecting tubule. The
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संबंधित प्रश्न
Assertion: Urea is excreted out through the kidneys.
Reason: Urea is a toxic substance.
Identify the CORRECT combinations in the given table.
| Part of nephron | Location | Function | |
| i. | Malpighian body | Cortex | Filtering blood |
| ii. | Proximal convoluted tubule | Cortex | Absorption of useful substances |
| iii. | Distal convoluted tubule | Only Medulla | Absorption of urea by action of ADH |
| iv. | Collecting duct | Either Cortex or Medulla | Collection of urine |
What would be the outcome if the PCT is removed from the nephron?
JG cells of Kidney secrete ______.
The tubular filtrate is finally known as ______.
Name the following:
Knot-like mass of blood capillary inside Bowman's capsule.
The blood flowing through the renal vein is oxygenated and normally does not contain nitrogenous waste.
Match the items in Column I with those in Column II and write down the matching pairs.
| Column I | Column II | ||
| (a) | Bowman's capsule | (i) | Renal artery |
| (b) | Contains more CO2 and less urea | (ii) | Regulates amount of water excreted |
| (c) | Antidiuretic hormone | (iii) | Renal vein |
| (d) | Contains more urea | (iv) | Glomerulus |
Name the following:
Six main parts of nephron.
Choose the odd one out in the following set and write the category for the remaining terms:
