Does the size of a persons bladder affect the length of time it takes to urinate? Will a person urinate more if they drink a cup of milk, a cup of soda or a cup of water?
I think it is reasonable to say that in general it takes longer to empty a large full bladder than it does to empty a smaller bladder which is also full. Remember though that people can urinate before their bladders become full and it will probably take approximately the same amount of time to expel, for example, 300cm3 urine whatever the size of the bladder. The bladder is a collapsible bag which spreads into the abdominal cavity when full. An adult bladder can hold a maximum of about 800cm3 urine but the average adult bladder holds about 500cm3 urine. Usually, when the volume of urine in the bladder reaches about 300-350cm3 stretch receptors in the bladder wall cause a message to be sent to the central nervous system that it is time to urinate but, as you will doubtless be aware, humans can put off urinating for some time until the pressure of the urine in the bladder becomes too much to resist! They can also urinate before the bladder becomes full. I dont think that there will be an
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