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Questions and Answers
What is the primary cause of pressure in the urinary bladder?
What is the primary cause of pressure in the urinary bladder?
- The expansion of the bladder walls
- The accumulation of urine (correct)
- The contraction of the bladder muscles
- The activity of the kidneys
Which of the following is the best description of the pressure in the urinary bladder?
Which of the following is the best description of the pressure in the urinary bladder?
- Caused by the accumulation of urine in the bladder (correct)
- Resulting from the bladder muscles contracting
- Constant and unchanging
- Caused by the kidneys filtering blood
What is the primary factor that determines the internal pressure in the urinary bladder?
What is the primary factor that determines the internal pressure in the urinary bladder?
- The strength of the bladder muscles
- The rate of urine production by the kidneys
- The accumulation of urine within the bladder (correct)
- The volume of the bladder
Which of the following best explains the pressure in the urinary bladder?
Which of the following best explains the pressure in the urinary bladder?
What is the main factor responsible for the internal pressure in the urinary bladder?
What is the main factor responsible for the internal pressure in the urinary bladder?
What does the pressure-volume curve represent?
What does the pressure-volume curve represent?
What happens to the bladder as the volume increases?
What happens to the bladder as the volume increases?
Which property of the bladder is illustrated by the pressure-volume curve?
Which property of the bladder is illustrated by the pressure-volume curve?
Which of the following best describes the relationship between pressure and volume in the bladder?
Which of the following best describes the relationship between pressure and volume in the bladder?
What is the purpose of the pressure-volume curve for the bladder?
What is the purpose of the pressure-volume curve for the bladder?
What is the typical volume in the bladder before voiding?
What is the typical volume in the bladder before voiding?
At what pressure does the micturition reflex typically occur?
At what pressure does the micturition reflex typically occur?
Which of the following best describes the volume in the bladder before voiding?
Which of the following best describes the volume in the bladder before voiding?
What is the approximate pressure at which the micturition reflex occurs?
What is the approximate pressure at which the micturition reflex occurs?
Which of the following is the most accurate description of the bladder volume and pressure mentioned in the text?
Which of the following is the most accurate description of the bladder volume and pressure mentioned in the text?
What is the maximum momentary pressure produced in the bladder wall?
What is the maximum momentary pressure produced in the bladder wall?
What effect does the sizable muscular contraction in the bladder wall have?
What effect does the sizable muscular contraction in the bladder wall have?
Which of the following statements is true about the bladder wall contraction?
Which of the following statements is true about the bladder wall contraction?
How does the bladder wall's contraction contribute to internal pressure?
How does the bladder wall's contraction contribute to internal pressure?
What impact does the momentary pressure in the bladder wall have on urine expulsion?
What impact does the momentary pressure in the bladder wall have on urine expulsion?
What is the relationship between pressure and volume in the urinary bladder according to the graph?
What is the relationship between pressure and volume in the urinary bladder according to the graph?
What is the maximum pressure shown on the graph?
What is the maximum pressure shown on the graph?
Based on the information provided, to which population does the 'typical max' refer?
Based on the information provided, to which population does the 'typical max' refer?
What is the unit of measurement used for pressure in the graph?
What is the unit of measurement used for pressure in the graph?
Which of the following statements is true based on the information provided?
Which of the following statements is true based on the information provided?
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Study Notes
Pressure in the Urinary Bladder
- The internal pressure in the bladder is due to the accumulation of urine.
- The bladder stretches as the volume of urine increases, as shown in the typical pressure-volume curve.
- The volume of urine in the bladder before voiding is approximately 500 ml.
- At a pressure of around 30 cmH2O, the micturition reflex occurs.
- The micturition reflex causes a sizable muscular contraction in the bladder wall, producing a momentary pressure of up to 150 cmH2O.
- For adults, the typical maximum pressure is not specified but the pressure range is shown in Fig 2.
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