There is an ________ relationship between urine volume and urine specific gravity.

There is an ________ relationship between urine volume and urine specific gravity.

• A. Direct
• B. Inverse
• C. No
• D. Cyclic

Answer: (B)

Urine specific gravity shows how concentrated the urine is, effectively its density relative to water. When you produce a large volume of urine, the solutes are spread out over more fluid, so the urine becomes more dilute and its specific gravity falls. Conversely, when urine volume is low, the urine is more concentrated and its specific gravity rises. This pattern is helped by ADH: this hormone increases water reabsorption in the kidneys, reducing urine volume and making urine more concentrated (higher SG). In practical terms, drinking a lot of water gives dilute urine with a low SG, while dehydration gives concentrated urine with a high SG. So the two variables tend to move in opposite directions.

Urine specific gravity shows how concentrated the urine is, effectively its density relative to water. When you produce a large volume of urine, the solutes are spread out over more fluid, so the urine becomes more dilute and its specific gravity falls. Conversely, when urine volume is low, the urine is more concentrated and its specific gravity rises. This pattern is helped by ADH: this hormone increases water reabsorption in the kidneys, reducing urine volume and making urine more concentrated (higher SG). In practical terms, drinking a lot of water gives dilute urine with a low SG, while dehydration gives concentrated urine with a high SG. So the two variables tend to move in opposite directions.