Urinary Bladder
The urinary bladder is formed partly from the entodermal cloaca and partly from the ends of the Wolffian ducts. In other words, the allantois takes no share in its formation.
After the separation of the rectum from the dorsal part of the cloaca, the ventral part becomes the primary urogenital sinus. The urogenital sinus, in turn, divides into the superficial definitive urogenital sinus and the deeper anterior vesico-urethral portion.
Read more about this topic: Development Of The Urinary And Reproductive Organs
Famous quotes containing the word bladder:
“Consider the vice president, George Bush, a man so bedeviled by bladder problems that he managed, for the last eight years, to be in the men’s room whenever an important illegal decision was made.”
—Barbara Ehrenreich (b. 1941)