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STD 11 - 15. Body fluids and criculations — BIOLOGY STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceBIOLOGYSTD 11 - 15. Body fluids and criculations1 Mark
MCQ
Heart beats are controlled by a nodal tissue which is composed of
  • ✓
    Purkinje fibres
  • B
    Myonemes
  • C
    Collagen fibres
  • D
    Telodendrites
✓

Answer

Correct option: A.
Purkinje fibres
a
(a) Initiation of heart beat is under special bundles of cardiac muscles called nodal tissue or autorhythmic cells. Nodol tissue consists of $S.A.$ node, $A.V.$ node, bundle of his and purkinje fibres.

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