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प्रश्न
Explain the principle of dialysis with the help of a labelled diagram.
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उत्तर
Principal of dialysis:
The procedure of dialysis is based on diffusion of solutes and ultrafiltration of fluid across a semi-permeable membrane. In dialysis, the blood from a convenient artery is pumped into the dialyser of a dialysing machine. A dialyser contains a coiled cellophane tube surrounded by the dialysing solution. The dialysing solution contains water, glucose and salts, which are similar in concentration to those in normal blood. The porous cellophane membrane of the tube allows the passage of molecules based on concentration gradient. As the patient’s blood is passed through the dialysing solution, most of the wastes (like urea) present in it pass through the selectively permeable cellulose tubes into the dialysing solution, thereby cleaning the blood. The clean blood is pumped back to the body through a vein.
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संबंधित प्रश्न
Write the functions of Kidney
State whether the following statement is true or false:
Some organisms store wastes in body parts.
Fill in the blank :
Nitrogenous wastes in the urine are in the form of urea and .....................
Fill in the blank.
Malpighian body consists of Bowman’s capsule and .....................
Name the following:
The tuft of capillaries inside the Bowman's capsule.
One of the following sets of body parts or substances or processed, pick out the one item which overall includes the remaining foir.
Skin, liver, lungs, kidneys, excretion.
In summer the urine is slightly thicker than in winter explain the reason.
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?
Study the diagram given alongside and then answer the question that follow:
What is the technical term given to the process occurring in 2 and 3? Briefly describe the process.
Describe in brief how urine is produced in the human body.
Differentiate between:
Renal cortex and Renal medulla.
Differentiate between:
Ureter and Urethra.
Name the Following
The blood vessels which brings pure blood to the kidneys:
Name the Following
The process by which kidneys regulate the water content of the body.
Write the functional activity of the following structure:
Glomerulus
Write the functional activity of the following structure: Henle’s loop
Answer the following question.
State the role of liver in urea production.
Among the following animals, the best conserver of water is ______.
What would happen if green plants disappeared from earth?
Certain organisms that are aquatic in habitat, tolerate only a narrow range of salinity. What term is given to such animals?
