Which animal has the largest heart?

  • A
    Giraffe
  • B
    Elephant
  • C
    Crocodile
  • D
    Lion

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Purkinje fibres are present in

Purkinje fibers primarily help in the contraction of which part of the heart?

$SA-$node is located in

The most common site for a fatal occlusion leading to myocardial infarction is:

Provide the definition/explanation for the following heart valves:
$(1)$ $AV$ valve (Tricuspid)
$(2)$ Mitral (Bicuspid) valve

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