Body systemsQuestion 1660 of 1700
At about what volume does the bladder signal the brain that it is full?
- Around 300 mL
- Around 30 mL
- Around 3,000 mL
- Around 50 mL
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Correct answer: Around 300 mL
At about 300 mL the bladder tells the brain it is full, so the brain can time the release of urine.
Questions last reviewed: 18 October 2026