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प्रश्न
Study the diagram given below and then answer the questions that follow:
 |
- Name the region in the kidney where the above structure is present?
- Name the parts labelled 1, 2, 3 and 4.
- Name the stages involved in the formation of urine.
- What is the technical term given to the process occurring in 2 and 3? Briefly describe the process.
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उत्तर
- Renal cortex
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- Afferent arteriole
- Glomerulus
- Bowman's capsule
- Efferent arteriole
- Ultrafiltration, tubular reabsorption, and tubular secretion.
- The process occurring in 2 and 3 is known as ultrafiltration.
Ultrafiltration: The blood flows through the glomerulus under great pressure, much greater than in the capillaries elsewhere. The reason for this greater pressure is that the efferent (outgoing) arteriole is narrower than the afferent (incoming) arteriole. This high pressure (hydrostatic pressure) causes the liquid part of the blood to filter out from the glomerulus into the renal tubule. This filtration under extraordinary force is called ultrafiltration.
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संबंधित प्रश्न
The kidneys in human beings are a part of the system for ______.
the Biological/technical term Pigment providing colour to urine.
The Biological/technical term for The removal of nitrogenous wastes from the body
What is urethra?
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?
Look at the figure given below. It is a section of human kidney as seen from the front.
Which area/part (give its name and number given on the diagram) which contains the following:
(i) Malpighian capsule
(ii) The pyramids
(iii) Freshly collected urine
Name the Following
The Inner concave margin of kidney.
The tadpole of frog lives in water, hence its mode of excretion is ______.
Give two examples of the following:
Nitrogenous waste
Name the following;
Three nitrogenous wastes of our body.
