In frogs, the venous system includes specialized connections where blood from certain body parts is carried to specific organs before returning to the heart. Identify the two organs that serve as the receiving destinations for these portal systems.

Step-by-step solution

In frogs, the venous system includes special venous connections that carry blood from one capillary bed to another before returning to the heart. These are known as portal systems. The hepatic portal system is a specialized venous connection that carries blood from the intestine to the liver. Here, the liver is the receiving organ. The renal portal system is a specialized venous connection that carries blood from the lower parts of the body to the kidneys. Here, the kidney is the receiving organ. Therefore, the liv