Assertion `:` The sino-atrial node (SAN) is called the pacemaker. Reason `:` SAN is responsible for initiating and maintaining the rhythmic contractil

Assertion `:` The sino-atrial node (SAN) is called the pacemaker. Reason `:` SAN is responsible for initiating and maintaining the rhythmic contractil
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Assertion `:` The sino-atrial node (SAN) is called the pacemaker. Reason `:` SAN is responsible ... False. D. If both Assertion & Reason are false.
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Which is responsible for initiating and maintining the rhythmic contractile activity of the heart ?

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In humans, blood passes from the post caval to the diastolic right atrium of heart due to (a) stimulation of the sino auricular node (b) pressure difference between the post caval and atrium (c) pushing open of the venous valves (d) suction pull.

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