Explain the renal mechanism for this polyuria

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Assignment:

1. Normal urinary pH is around 6, although urine pH may range from 5 to 8.

(a) Which urine contains more hydrogen ions -- pH 5 or pH 8?

(b) Why isn't urine pH kept near 7.4 like ECF pH?

2. What would the presence of large amounts of glucose in the urine (glycosuria) indicate about its concentration (mg per dL) in the plasma?

3. Severe diabetes mellitus is characterized by a larger than normal production of urine (polyuria). (The term "diabetes" originally meant "syphon" or "running through.") Explain the renal mechanism for this polyuria.

4. Why are plasma proteins and erythrocytes usually not found in the urine?

5. What effect would going without fluid intake for 24 hours have on the:

(a) specific gravity of your urine?

(b) release of ADH from the posterior pituitary?

6. What is the difference between filtrate and urine?

Reference no: EM133979595

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