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प्रश्न
Give Reasons for the Following:
All living things must excrete.
उत्तर
Metabolic activities of all living things produce more waste materials. These, if accumulate in the body, become poisonous and destroy the vital organs. So excretion is a must.
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संबंधित प्रश्न
Name the following:
Animals which excrete uric acid.
Give Technical Term:
The waste product which is excreted by the liver.
Give Technical Term:
Name two substances found both in urine and sweat.?
Circle the odd one.
Differentiate cortical from medullary nephrons.
The human kidneys are located on either side of the vertebral column at the level of ______.
Kidneys receive approximately ______ liters of blood.
______ gland is located above the kidney.
Arrange the following statements in the correct order in which they occur during the formation and removal of urine in human beings.
(a) Ureters carry urine to the urinary bladder.
(b) Wastes dissolved in water are filtered out as urine in the kidneys.
(c) Urine stored in the urinary bladder is passed out through the urinary opening at the end of the urethra.
(d) Blood containing useful and harmful substances reaches the kidneys for filtration.
(e) Useful substances are absorbed back into the blood.
Name the following:
Three main parts of our urinary system.
