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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
The kidneys in human beings are a part of the system for ______.
Draw a diagram of the human excretory system and label the various parts.
Bile, Urea, Uric acid, Ammonia
_____________ secreted by the (ii) _____________ lobe of the pituitary gland. If this hormone secretion is reduced, there is an increased production of urine. This disorder is called (iii) ____________. Sometimes excess glucose is passed with urine due to hyposecretion of another hormone called (iv) _____________ leading to the cause of a disease called (v) ______________.
The form in which glucose in stored in liver.
Where is the dirty blood in our body filtered?
Name the two waste products of the human body which are produced in the body cells.
What is the role of glomerulus in the kidney?
Why do some people need to use a dialysis machine? What does the machine do?
If a patient is out on dialysis, he is most likely suffering from a severe ailment of the:
(a) circulatory system
(b) respiratory system
(c) excretory system
(d) digestive system
Explain the difference between the excretory system of humans and plants.
Choose the correct answer:
Narrow apex of pyramid in kidney is called ___________
Name the Following
The structural and functional units of kidney
Give Technical Term:
The organ which filters out urea and uric acid from the bloodstream.
Write the functional activity of the following structure: Henle’s loop
Choose the correct option.
Deproteinised plasma is not found in ______.
The number of ATP molecules required to produce one molecule of urea from the omithine cycle.
Name the organs that store and release the urine.
Give two examples of the following:
Main excretory organs
