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Which of the following walls separate the right and left atria?(a) Thin, intra-atrial septum(b) Thick, intra-atrial septum(c) Thick, inter-atrial septum(d) Thin, inter-atrial septumI have been asked this question during an interview.My question is based upon Double Circulation topic in division Body Fluids and Circulation of Biology – Class 11

Answer»

The correct answer is (d) Thin, inter-atrial SEPTUM

Explanation: A thin, muscular wall called as the inter-atrial septum SEPARATES the RIGHT and the left atria, WHEREAS a thick-walled, inter-ventricular septum separates the left and the right VENTRICLES.



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