Question

Choose the wrong statement regarding the circulatory system of frog

• A. Sinus venosus receives blood through major veins called vena cava
• B. The ventricle opens into a sac like conus arteriosus
• C. The erythrocytes are nucleated
• D. Special venous connection between liver and intestine called renal portal system is present
• E. Lymphatic system consists of lymph, lymph channels and lymph nodes

Answer 1

Answer: (D)

Venous connection between liver and intestine is called hepatic portal system. It transports the blood containing absorbed products of digestion from intestine directly to the liver where the excess products are stored, other products are modified if needed and are then loaded into the systemic blood circulation.