The auriculo-ventricular node in human heart was discovered by
A
Hiss
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B
Lewis
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C
Ringer
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D
William Harvey
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E
Sunao Tawara
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Solution
The correct option is E Sunao Tawara Sunao Tarawa in 1906 first discovered auriculo-ventricular node. It is an area composed of specialized tissue between the atria and the ventricles of the heart. It lies in the posteroinferior region of the interatrial septum near the opening of the coronary sinus, which conducts the normal electrical impulse from the atria to the ventricles.