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In micturition...

In micturition

A

urethra relaxes

B

ureter contracts

C

ureter relaxes

D

urethra contracts

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The correct Answer is:
A
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Assertion: During micturition, urine is prevented from flowing back into the ureters. Reason: Urethral sphincters contract during micturition

Parasympathetic activity during micturition causes :-

During micturition, the urinary bladder …………. and the urethral sphincters ………..

Give the names of the hormones released by neurohypophysis. A boy shows excessive thirst and micturition because of deficiency of a hormone secreted by neurohypophysis. Name the disease he is suffering from.

Medulla oblongata controls I. breathing and blood pressure II. Gut peristalsis and gland secretion III. Vasodilation and vasoconstriction IV. Laughing and micturition

Assertion. The urinary bladder has a well developed, 3-layered detrusor muscle in its wall. Reason. Bladder gradually contracts to drive urine out during micturition.

Fill in the blanks with appropriate words : (a) During micturition, the urinary bladder .......and the urethral sphincters ...... . (b) Flame cells and malpighian tubules are found in ...... And......, respectively. (c) Blood enters the glomerulus through .......arteriole and leaves via the.....arteriole. (d) Two counter-current systems are formed in the kidney by the .....and the....... . (e) Sweat serves to eliminate mainly .......and........ .

The micturition reflex

What is micturition?

ARIHANT NEET-EXCRETORY PRODUCTS AND THEIR ELIMINATION-Chapter Exercises(Taking it together)
  1. The kidneys control the amount of water with the help of hormone

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  2. The kidneys control the amount of Na with the help of hormone

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  3. In micturition

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  4. If we remove the pressure receptors from the urinary bladder wall then

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  5. Excretion is a continuous process but urine is not passed out continuo...

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  6. Concentration of inorganic salts in normal urine of a human beings is

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  7. The pH of human urine is approximately

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  8. Human urine is invariably acidic because

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  9. Why do we pass more urine during winter and wet seasons ?

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  10. Kidneys are not the only organs of excretion their work is supplemente...

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  11. In Bright's disease (nephritis), occurs

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  12. The condition of accumulation of urea in the blood is termed as

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  13. Isosthenuria is

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  14. The main cause of diabetes insipidus is

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  15. Excessive thirst leading to increased consumption of water is

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  16. Which of the following statements is correct?

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  17. A large quantity of one of the following is removed from our body by l...

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  18. Dialysing unit (artificial kidney) contains a fluid which is almost sa...

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  19. What will happen if one kidney of a person is removed

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  20. The urine under normal conditions does not contain glucose because

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