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प्रश्न
The diagram given below shows a section of human kidney. Study the diagram carefully and answer the questions that follow :
(i) Label the parts numbered 1 to 4.
(ii) Why does part ‘2’ have a striped appearance?
(iii) What is the fluid that passes down part ‘4’? Name the main nitrogenous waste present in it.
(iv) Mention the structural and functional units of kidneys.
(v) Name the two major steps in the formation of the fluid mentioned in Q.5 (a) (iii).
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उत्तर
(i)
1 – Cortex
2 – Medulla
3 – Pelvis
4 – Ureter
(ii) Medulla is composed of a striped substance arranged in several pyramids. Hence, the medulla (2) has a stripped appearance.
(iii) Urine passes down part ‘4’, i.e. ureter. The main nitrogenous substance present in it is urea.
(iv) Nephrons are the structural and functional units of the kidneys.
(v) The two major steps in the formation of urine are ultrafiltration and selective reabsorption.
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संबंधित प्रश्न
The diagram given below shows the male urinogenital system of a human being. Study the diagram and answer the questions that follow:
(i) Label the parts numbered 1 to 8.
(ii) Name the corresponding structure of part (4) in female reproductive system.
(iii) What is the role of part 7?
The organs which extract the nitrogenous wastes from the blood are ______.
Draw a neat labelled diagram of the human excretory system.
Describe the mechanism of urine formation in human excretory system. Draw a labelled diagram to illustrate your answer.
Define the following term :
Renal pelvis
Differentiate between:
The Renal artery and the Renal vein.
Differentiate between:
Renal cortex and Renal medulla.
Name the Following
The process by which kidneys regulate the water content of the body.
Name the Following
The substance found in excess in the urine of a diabetic patient.
Give two examples of the following:
Main excretory organs
