Changes

choice5="of the renal portal system"

choice5="of the renal portal system"

correctchoice="5"

correctchoice="5"

feedback1="'''Incorrect!''' Lizards do indeed have a three chambered heart; however this does not explain the increased renal toxicity. The reason is the renal portal system: 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]]"

feedback1="'''Incorrect!''' Lizards do indeed have a three chambered heart; however this does not explain the increased renal toxicity. The reason is that 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. 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]]"

feedback3="'''Incorrect!''' The reason is the renal portal system: 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]]"

feedback3="'''Incorrect!''' The reason is that 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. 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]]"

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]]"