Question

In frog, the renal portal system is a special venous connection that acts to link ______.

Options

• Liver and intestine

• Liver and kidney

• Kidney and intestine

• Kidney and lower part of body

Answer 1

In frog, the renal portal system is a special venous connection that acts to link kidney and lower part of body.

Explanation:

In frogs and other lower vertebrates, the renal portal system is a secondary venous system that gathers blood from the posterior body parts and rear limbs and directs it to the kidneys before it enters the systemic circulation. In particular, the renal portal vein connects the kidneys to the hind limbs and tail through the sciatic and femoral veins. The renal portal system specifically links the kidneys, not the liver, even though the liver is part of the hepatic portal system.