NEET Biology question
Read the following statements and select the correct ones. (i) Nodal tissue is specialized cardiac musculature in human heart which has the ability to generate action potential due to an external stimuli (ii) Position of SAN - Right corner of right atrium (iii) Position of AVN - Right corner of left ventricle (iv) AV bundle continues from AVN (v) Purkinje fibres are modified cardiac muscle fibres that originate from the atrioventricular node and spread into the two ventricles.
Solution
Nodal tissue is auto-excitable, generating action potentials without any external stimulus, so (i) is false, and the AVN lies near the base of the right atrium close to the atrioventricular septum rather than in the left
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