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Question
Study the diagram given alongside and then answer the question that follow:
Name the stages involved in the formation of urine.
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Solution
Urine formation occurs in two steps - ultrafiltration and reabsorption.
RELATED QUESTIONS
Fill in the following blank with suitable word:
Gums and resins are the .......... products of plants.
What are the methods used by plants to get rid of their waste products?
The organs A of a person have been damaged completely due to which too much of a poisonous waste material B has started accumulating in his blood, making it dirty. In order to save this person's life, the blood from an artery in the person's arm is made to flow into long tubes made of substance E which are kept in coiled form in a tank containing solution F. This solution contains three materials G, H and I in similar proportions to those in normal blood. As the person's blood passes through long tubes of substance E, most of the wastes present in it go into solution. The clean blood is then put back into a vein in the arm of the person for circulation.
(a) What are organs A?
(b) Name the waste substance B.
(c) What are (i) E, and (ii) F?
(d) Name G, H and I.
(e) What is the process described above known as?
Name the following:
The vein in which urea concentration is maximum
Define the following term:
Osmoregulation
Look at the figure given bellow, it is a section of human kidney as seen from the front.
Is it a longitudinal section or a cross-section?
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 contains the highest concentration of urea?
Explain the functioning of kidney.
Write the functional activity of the following structure: Kidney
What is the purpose of making urine in the human body?
