Как только меня еще терпят :(

[tasha_ab]

нашла таки, очень похоже, эта вторичная циркуляция называется "enterohepatic circulation", вот выдержка, ссылка внизу:


"
... This "waste disposal" system starts in your liver, which continuously filters your
blood. As blood passes through the liver's network of tiny capillaries, liver cells
remove toxins, cholesterol, medications, waste hormones, and whatever else
your body figures it is better off without. These undesirables are then sent from
the liver into a small tube, called the bile duct, which leads to your intestinal tract.
There, fiber soaks up these chemicals and carries them out with the wastes.
Now, there is plenty of fiber in vegetables, fruits, beans, and whole grains. So if
these are a big part of your diet, your "waste disposal" system works pretty well.
The liver pulls hormones out of the bloodstream, they slide down the bile duct,
fiber picks them up, and out they go.
But what happens if your lunch consisted of a chicken breast and a cup of
yogurt? These products don't come from plants—and that means they have no
fiber at all. Not a speck. So when your liver sends hormones or other chemicals
into the intestinal tract, there is nothing for them to attach to. They end up being
reabsorbed back into your bloodstream, and the whole process starts over again.
This endless cycle—hormones passing from the bloodstream, through the liver,
into the intestinal tract, and, unfortunately, back into the bloodstream—is called
enterohepatic circulation. It keeps hormones circulating for longer than they
should. Fiber stops this cycle by carrying hormones out once and for all.
"
http://www.cancerproject.org/resources/handbook/section2.pdf