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Define Portal System. Name two types of Portal System found in frog. | web4study
Define Portal System. Name two types of Portal System found in frog.
The set of veins, which collect blood from one organ and discharge it into another are called portal veins, and, the system consisting of the veins doing this, is called portal system.
Kinds of Portal System:
There are two kinds of portal system in the frog.
(i) Hepatic portal system.
(ii) Renal Portal system.
(i) Hepatic Portal System:
Blood from the digestive system is taken to the liver by Hepatic portal vein. From the liver, it enters the. post cavil. Blood from hind limbs is collected by abdominal vein & taken to the liver.
(ii) Renal Portal System:
The alternate route of blood from the hind limbs is by the way of a renal portal vein. The blood is collected by capillaries in hind limbs which join to form the renal portal vein. It opens into kidneys. From kidneys, the blood enters post cavil by renal veins.