$A$ patch of nodal tissue responsible for initiating the rhythmic contractile activity of the heart is present in:
- ALower left corner of the left ventricle
- BUpper right corner of the right atrium
- CLower left corner of the right ventricle
- DUpper left corner of the left atrium
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Analogy type questions:
$(1)$ Right atrium and right corner : $SA$ node :: Corner of right atrium : .......
$(2)$ First heart sound : $Lubb$ :: Second heart sound : ...........
$(1)$ Right atrium and right corner : $SA$ node :: Corner of right atrium : .......
$(2)$ First heart sound : $Lubb$ :: Second heart sound : ...........
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