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प्रश्न
Answer the following question.
Anitaji needs to micturate several times and feels very thirsty. This is an indication of change in permeability of certain part of nephron. Which is this part?
उत्तर
- Need to micturate several times (polyuria) and feeling very thirsty (polydipsia) is a symptom of diabetes insipidus (imbalance of fluids in the body).
- ADH prevents diuresis and due to absence of ADH, large amount of dilute urine is excreted.
- ADH stimulates reabsorption of water from last part of DCT and entire collecting duct by increasing the permeability of cells.
- If the permeability of these cells changes, it will result in increase in urine volume (frequent micturition) and increase in the osmolarity of blood. An imbalance in volume and osmolarity of body fluids increases thirst.
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संबंधित प्रश्न
Role of ADH is ______.
Maximum water needs to be reabsorbed in camels. Hence we find that ______.
If a person is sweating and does not drink enough water, the concentration of urine is likely to be ____________ mOsm/L.
Match the Columns.
| Column I (Function) | Column II (Part of the excretory system) | ||
| i. | Ultrafiltration | a. | Henle's loop |
| ii. | The concentration of urine | b. | Urinary bladder |
| iii. | Storage of urine | c. | Ureter |
| iv. | Forms a passage for urine | d. | Malpighian corpuscle |
| e. | Proximal convoluted tubule |
Identify the INCORRECT statement.
Most of the tubular secretion occurs in the ____________.
Which statement is INCORRECT regarding mechanism of urine formation in man?
JGA responds to fluctuation in ____________.
Which of the following pair of structures of the nephron will play a role in counter current mechanism?
The obligatory absorption of water takes place in various regions of the nephron EXCEPT.
