Movements of the ureter.

A cinematographic study of the movements of the ureter in an anaesthetised rabbit. The left ureter, left kidney and bladder are first exposed by laparotomy; the urine is then darkened by injecting a dye (indigo carmine) into an ear vein, so that its passage along the ureter can be readily observed. Movements of the ureter are then recorded at three different camera speeds - normal, 3 times normal speed and slowed down 2 1/2 times. High speed photography shows the shape of the urine moiety.