Read the following statements and choose the correct option.
Statement-I: Atria receive blood from all parts of the body which subsequently flows to ventricles.
Statement-II: Action potential generated at sino-atrial node passes from atria to ventricles.
is dependent on action mentioned in Statement II.
Text Solution
Verified by ExpertsThe superior vena cava pours venous blood into right atria and left atria receive blood from lungs. This, then, flows into ventricles. The contraction of muscles of atria arise from SA nodes and passes to AV node and then to the Purkinje fibres. Therefore, action mentioned in statement I and II are synchronous, while the other options are wrong.
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