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सी.आई.एस.सी.ई.आईसीएसई ICSE Class 7

How Are Kidney Stones Formed? - Biology

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प्रश्न

How are kidney stones formed? 

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उत्तर

Kidney stones are formed when crystal-forming substances such as calcium oxalate, calcium phosphate, and uric acid are more than the fluid in the urine. When these chemicals start sticking together, they form crystals, commonly called kidney stones. They may be formed and cause severe pain.

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Common Disorders of the Urinary System
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अध्याय 5: Excretion in Humans - Long answer questions

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सेलिना Concise Biology [English] Class 7 ICSE
अध्याय 5 Excretion in Humans
Long answer questions | Q 7

संबंधित प्रश्न

What are the two ways by which a person can get relief in case of kidney failure?


Draw a diagram of the human excretory system and label the following parts: Kidney, ureter, urinary bladder, and urethra. 


Correct the sequence of the following steps to explain the process of urine formation.   

1. Blood enters the glomerulus under high pressure.
2. The filtrate passes through the thin walls of the Bowman’s capsule into the renal tubule
3. As the filtrate, passes through the tubule, water, and many useful substances are reabsorbed by the walls of the blood capillaries.
4. Water and small solutes are filtered in the Bowman’s capsule.
5. The remaining liquid, along with waste is called urine and is collected in the urinary bladder.
6. Blood containing waste material enters the kidneys through the renal artery.


Answer the following question.

John has two options as a treatment for his renal problem: Dialysis or kidney transplants. Which option should he choose? Why?


Complete the diagram/chart with correct labels/ information. Write the conceptual details regarding it.


Complete the diagram/chart with correct labels/ information. Write the conceptual details regarding it.


Bright's disease is characterized by the following symptoms EXCEPT ______


Excretion of uric acid includes the following features EXCEPT ______


Match the abnormal conditions given in Column A with their explanations given in Column B and Choose the correct option

Column A Column B
A. Glycosuria i. Accumulation of uric acid in joints
B. Renal calculi ii. Inflammation in glomeruli
C. Glomerular nephritis iii. Mass of crystallised salts within the kidney
D. Gout iv. Presence of glucose in urine

Presence of which of the following conditions in urine are indicative of diabetes mellitus?


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