Question

The heart beat is initiated and regulated by nodal tissue made of specialised cardiac muscles called

• A. Spongy tissue
• B. Purkinje tissue
• C. Alveolar tissue
• D. None of these

Answer 1

The correct option is B Purkinje tissue

Purkinje tissue is influenced by electrical discharge from the sinoatrial node. During the ventricular contraction portion of the cardiac cycle, the Purkinje fibres carry the contraction impulse from both the left and right bundle branch to the myocardium of the ventricles. In this way these fibres control and initiate heart beat.

So, the correct option is B. ( Purkinje tissue )