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Lecture notes study book Chemistry Part II (NCERT XII) of - ISBN: 9788120801646 (Good)
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Some examples from this set of practice questions
1.
What is human excretory system
Answer: The excretory system consists of pair of kidneys, one pair of ureter ,a urinary bladder and urethra. Kidneys are reddish brown colour. It has bean shaped structure. Situated between thoracic and third lumbar vertebra close to the dorsal inner wall. The ureter,blood vessels, nerves enter the kidneys through the hilum. The kidneys divided into the outer cortex and inner medulla. Conical masses present in the medulla are called medullary pyramid.
2.
Explain micturition.
Answer: The process of expulsion of urine from the unity bladder is called micturition.
3.
What is counter current mechanism.
Answer: The transport of substance facilitated by the special arrangement of Henley\'s loop and vasa recta is called counter current mechanism.
4.
What is spirometer
Answer: Instrument used to recording changes in lung volume
5.
What is asthma
Answer: Difficulty in breathing due to inflammation of bronchi and bronchioles
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