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प्रश्न
The given diagram represents a nephron and its blood supply. Study the diagram and answer the following questions:
(i) Label parts 1, 2, 3 and 4.
(ii) State the reason for the high hydrostatic pressure in the glomerulus.
(iii) Name the blood vessel which contains the least amount of urea in this diagram.
(iv) Name the two main stages of urine formation.
(v) Name the part of the nephron which lies in the renal medulla.
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उत्तर
(i)
1 – Collecting duct
2 – Distal convoluted tubule (DCT)
3 – Descending limb of loop of Henle
4 – Bowman’s capsule
(ii) The diameter of efferent arteriole is narrower than the diameter of the afferent arteriole which builds the high hydrostatic pressure in the glomerulus.
(iii) Efferent arteriole
(iv) The two main stages of urine formation are ultrafiltration and tubular reabsorption.
(v) Henle’s loop and collecting tubules
संबंधित प्रश्न
Give biological reasons for the following statements: There is frequent urination in winter than in summer
Name the two waste products of the human body which are produced in the body cells.
Fill in the following blank with suitable word:
Gums and resins are the .......... products of plants.
Describe the mechanism of urine formation in human excretory system. Draw a labelled diagram to illustrate your answer.
The excretory unit in the human excretory system is called:
Why is excretion necessary in living beings?
Given below is a set of five terms. Rewrite the terms in their correct order so as to be in logical sequence.
Afferent arteriole, renal vein, secondary capillary network, glomerulus, efferent arteriole.
Differentiate between the following pairs of terms:
Bowman’s capsule and malpighian capsule.
The following diagram represents a mammalian kidney tubule (nephron) and its blood supply.
Parts indicated by the guidelines 1to 8 are as follows:
1. Afferent arteriole from renal artery
2. Efferent arteriole
3. Bowman's capsule
4. Glomerulus
5. Proximal convoluted tubule with blood capillaries
6. Distal convoluted tubule with blood capillaries
7. Collecting tubule
8. U-shaped loop of Henle
Study the diagram and answer the question that follow:
Which structure (normally) contains the lowest concentration of glucose?
Choose the correct option.
Which one of the following organisms excrete waste through nephridia?
