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  • Incomplete  double circuit is found in amphibians and reptiles which possess a heart, with  Option: 1</s

Incomplete  double circuit is found in amphibians and reptiles which possess a heart, with

 

Option: 1

Two atria and one ventricle

 


Option: 2

One atria and two ventricles

 


Option: 3

Two atria and two ventricles.

 


Option: 4

One atria and one ventricle


Answers (1)

best_answer

 Incomplete or mixed double circuit

 
  • The double circuit contains two distinct loops which operate through a 3 or 4-chambered heart. 
  • Incomplete  double circuit is found in amphibians and reptiles. 
  • Amphibians and reptiles possess three-chambered heart, with two atria and one ventricle. 
  • The left atrium receives oxygenated blood from gills/skin/lungs whereas the right atrium receives deoxygenated blood from body parts
  • Atria receive blood from two different routes- 

  •              - Through the lungs/gills/skin known as pulmonary circulation 
                 - From the rest of the body and its organs, including the brain known as systemic circulation

Incomplete double circuit is found in amphibians and reptiles which possess three-chambered heart, with two atria and one ventricle. Hence, the correct answer is option a.

Posted by

vishal kumar

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