Biology Body Fluids and Circulation Circulatory Pathways and Human Circulatory System Single Correct MCQ
Published on: August 12, 2026

Within human heart, AV node is found at

A
lower left corner of right atrium
B
upper right corner of right ventricle
C
upper right corner of left atrium
D
lower left corner of left ventricle

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A mass of neuromuscular tissue called the sinoatrial node (SAN) is found in the wall of the right atrium near the opening of the superior vena cava (upper right corner of the right atrium). Another mass of neuromuscular tissue called the atrioventricular node (AVN) is found in the lower left corner of the right atrium between the right atrium and left ventricle at the junction of the interatrial and interventricular septum.

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