The loops of Henle are also partly emptied during the pelvic contraction

*Urodynamic Events: Loops of Henle*
The loops of Henle are also partly emptied during the pelvic contraction. This can be seen following a bolus injection of Lissamine Green SF, when the fluid in the loops becomes temporarily green. Each contraction appears to squeeze the fluid out of the loops.	Lissamine Green and loops of Henle