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feedback2="'''Incorrect!''' Reptiles have a renal portal system where venous return from the tail and hindlimbs may be filtered through the kidneys to bathe the renal tubules. [[Lizard Cardiovascular System|WikiVet Article: Lizard Cardiovascular System]]"  

feedback2="'''Incorrect!''' Reptiles have a renal portal system where venous return from the tail and hindlimbs may be filtered through the kidneys to bathe the renal tubules. [[Lizard Cardiovascular System|WikiVet Article: Lizard Cardiovascular System]]"  

feedback4="'''Incorrect!''' Reptiles have a renal portal system where venous return from the tail and hindlimbs may be filtered through the liver. [[Lizard Cardiovascular System|WikiVet Article: Lizard Cardiovascular System]]"

feedback4="'''Incorrect!''' Reptiles have a renal portal system where venous return from the tail and hindlimbs may be filtered through the liver. [[Lizard Cardiovascular System|WikiVet Article: Lizard Cardiovascular System]]"

feedback5="'''Correct!''' Reptiles have a renal portal system where venous return from the tail and hindlimbs may be filtered through the kidneys to bathe the renal tubules. Venous return may also be filtered through the liver. [[Lizard Cardiovascular System|WikiVet Article: Lizard Cardiovascular System]]"

feedback5="'''Correct!''' Reptiles have a renal portal system where venous return from the tail and hindlimbs may be filtered through the kidneys to bathe the renal tubules. Venous return may also be filtered through the liver. Therefore the injection of drugs that are cleared via tubular excretion into the caudal half of the body could result in lower than anticipated serum concentration because of their excretion in the urine before entering the systemic circulation.[[Lizard Cardiovascular System|WikiVet Article: Lizard Cardiovascular System]]"

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