What is Bladder?
[[File:Urinary System (Male).png|220px|thumb|left|The Human Male Urinary System]] [[File:Urinary System (Female).png|200px|thumb|right|The Human Female Urinary System]] [[Image:Gray1140.png|thumb|The inside of the bladder]] [[File:Anatomytool Male and female urinary tract English.jpg|thumb|Human male and female urinary bladders and urethras]] The '''urinary bladder''' is an [[Organ (anatomy)|organ]] in the [[human]] [[body]] in charge of storing [[urine]]. It is part of our urinary system. All the [[liquid]]s that are drunk go through the bladder. The bladder takes in the liquid in order for the body to work. The bladder works with the [[kidney]]s. The [[kidney]]s clean the liquid we drink. This goes on until the bladder is too full to hold anymore. At this point, it is roughly the size of a softball. The bladder then tells the [[brain]] that it needs to be emptied. Once this message is received by the brain, the [[muscle]]s around the bladder starts to squeeze and the bladder starts to [[contract]]. At the same time, the bladder sends a message to the sphincters to relax and let the liquid pass and pass through the [[urethra]] out of the body. {{Biology-stub}} [[Category:Anatomy of the urinary system]]