Other Free Encyclopedias » 21st Century Webster's Family Encyclopedia » 21st Century Webster's Family Encyclopedia - Black haw to Boulez, Pierre



Bladder, muscular sac in the lower abdomen of all mammals that stores urine produced by the kidneys. Urine is carried to the bladder through 2 tubes called ureters and is emptied through the urethra by the contraction of a sphincter muscle. The term is also used to designate any similar organ in plants or animals; for example, the swim bladder in fish and the vesicles in some seaweeds.

See also: Kidney; Urine.

gall Bladder [next] [back] Elizabeth Blackwell

User Comments

Your email address will be altered so spam harvesting bots can't read it easily.
Hide my email completely instead?

Cancel or