Blood Going to the Liver Has Already Been Through One

Question

Blood going to the liver has already been through one capillary bed.

Accepted Answer

Blood from the digestive system enters the liver via the hepatic portal vein, which carries nutrients, toxins, and other substances from the intestines to the liver for processing. The blood has already passed through capillaries in the digestive organs before entering the liver sinusoids, which are another set of capillaries in the liver. This is known as a portal system, where blood travels through two capillary beds before entering systemic circulation.