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 Incomplete double circuit circulation is not observed in

 

Option: 1

Fishes

 


Option: 2

frog

 


Option: 3

crocodiles

 


Option: 4

Turtle 

 


Answers (1)

best_answer

 

 

 

The incomplete or mixed double circuit in reptiles 

  • The mixed or incomplete circuit of reptiles is much more complicated than that of amphibians as they have a three-chambered heart with incompletely divided ventricle
  • Sinus venosus is present in reptiles but is less functional
  • The conus arteriosus is divided into right systemic, left systemic and pulmonary arches
  • The left and right systemic arches are connected through a connection tube called foramen of panizzae
  • The SA node is present in the right auricle. 

 

Incomplete double circuit is not observed in crocodiles as they have four-chambered heart. Hence, the correct answer is option c.

Posted by

avinash.dongre

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