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What happens to the walls of distal conv...

What happens to the walls of distal convoluted tubule (DCT) of a nephron when vasopressin is released by pituitary into the blood stream ?

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Vasopressin, also called Anti - Diuretic Hormone (ADH), increases the permeability of DCT and collecting tubules of the nephron to water so more water is reabsorbed from nephric filtrate into interstitial fluid. This decreases the urine output and makes it hypertonic.
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Consider the following four statements (i) - (iv) and select the correct option stating which ones are true (T) and which ones are false (F). (i) The epithelium of proximal convoluted tubule (PCT) of nephron in the kideney has microvilli. (ii) Simple epithelium covers the dry surface of the skin, the moist surface of buccal cavity, pharynx, inner lining of ducts of salivary glands and of pancreatic ducts. (iii) The wall of internal organs such as the blood vessels, stomach and intestine contains skeletal muscle. (iv) The earthworm nervous system is basically represented paired nerve cord.

Consider the following four statements (i) - (iv) and select the correct option stating which ones are true (T) and which ones are false (F) (i) The epithelium of proximal convoluted tobule (PCT) of nephron in the kidney has microvilli (ii) Simple epithelium covers the dry surface of the skin, the moist surface of buccal cavity, pharynx, inner lining of salivary glands and of pancreatic ducts (iii) The wall of internal organs such as the blood vessels, stomach and intestine contains skeletal muscle (iv) Bone marrow in some bones is the site of production of blood cells.

Read the given statements regarding human excretory system and select the correct ones. (i). Presence of glucose in urine is known as uremia. (ii). Distal convoluted tubule (DCT) selectively secretes hydrogen ions, ammonia and potassium ions into the filtrate. (iii). Macule densa is formed by cellular modification in the distal convoluted tubule and the afferent arteriole at their contact location. (iv). Atrial natriuretic factor (ANF) can cause vasoconstriction when blood flow is low to the atria of the heart.

What happens when blood cells are placed in pure water?

MODERN PUBLICATION-EXCRETORY PRODUCTS AND THEIR ELIMINATION-REVISION EXERCISES (Short Answer Questions)
  1. Mention any two characteristics of ammonia as a nitrogenous metabolic ...

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  2. Mention two advantages of uricotelism in birds.

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  3. What happens to the walls of distal convoluted tubule (DCT) of a nephr...

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  4. What is ureotelism? List its advantages over ammonotelism.

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  5. Name the 3 common nitrogenous waste materials in vertebrates. Which of...

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  6. In what form the terrestrial reptiles excrete their nitrogenous wastes...

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  7. What do you mean by ammonotelic and ureotelic animals? Name one organi...

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  8. What is uricotelism? In what way is it advantageous to the land animal...

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  9. What is micturition? Give abnormal constituents of human urine.

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  10. Define ammonotelism. Name the excretory organs of flatworms.

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  11. Define uricotelism. Name the excretory organs of cockroach.

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  12. Define ureotelism. Name the excretory organs of earthworm.

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  13. Differentiate between ammonotelism, ureotelism and uricotelism.

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  14. Differentiate between tubular reabsorption and tubular secretion.

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  15. Describe the role of ADH and countercurrent system in forming hyperton...

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  16. Name the basic nitrogenous catabolite produced during protein cataboli...

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  17. Name a uricotelic animal. Why is it so called? How is this mode of exc...

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  18. Mammals can eliminate hypotonic urine and hypertonic urine according t...

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  19. What happens to the walls of distal convoluted tubule (DCT) of a nephr...

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  20. Where and how is urea produced in ureotelic animals ? What happens to ...

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