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  • The venous system of frog differs from that of a mammal i...
Multiple choice

The venous system of frog differs from that of a mammal in the presence of ___________.

  1. Renal portal system

  2. Hepatic portal system

  3. Three superior vena cavae

  4. Hepatic veins

  5. SA node

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Renal portal system brings blood from internal organs to their kidneys. It is not present in the mammals.

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