Editing Gallbladder and biliary tree (section)

== '''Physiology''' ==

* '''Gallbladder'''
** Serves as an extra-hepatic      bile storage
*** Back-fills from CBD when       there is increased sphincter of Oddi tone
*** Capable of storing up to       300mL of daily bile production
** Absorbs water and      concentrates bile in an osmotic process via active sodium transport
** Bile concentration leads to      increased cholesterol and composition, which leads to decreased stability      of phospholipid cholesterol vesicles, which allows nucleation of stagnant      cholesterol particles, and hence stone formation
** CCK (and to a lesser extent,      vagal activity) induces GB contraction and secretion, and relaxes the      sphincter of Oddi

[[Category:Anatomy]]