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प्रश्न
The diagram given alongside shows a section of a human kidney. Study the diagram carefully and answer the questions that follow:
- Label the parts numbered 1 to 4.
- Why does part 2 have a striped appearance?
- What is the fluid that passes down part 4? Name the main nitrogenous waste present in it.
- Mention the structural and functional units of kidneys.
- Name the two major steps in the formation of the fluid mentioned in (c).
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उत्तर
- 1: Cortex
2: Medulla
3: Pelvis
4: Ureter - Medulla is composed of a striped substance arranged in several pyramids. Hence, the medulla (b) has a striped appearance.
- Urine passes down part ‘4’, i.e., the ureter. The main nitrogenous substance present in it is urea.
- Nephrons are the structural and functional units of the kidneys.
- The two major steps in the formation of urine are ultrafiltration and selective reabsorption.
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Name the Following
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