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Home  >>  JEEMAIN and AIPMT  >>  Biology  >>  Human Physiology
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A patch of nodal tissue present in the _______________ of the ____________ (C) is called the ________________ (B). Another mass of nodal tissue seen in the ______________________ called the ________________________ (D) .

image
( a ) left upper corner of the right atrium, atrio-ventricular node (AVN); lower left corner of the right atrium close to the atrio-ventricular septum, sino-atrial node (SAN)
( b ) right upper corner of the right atrium, sino-atrial node (SAN); lower left corner of the left atrium close to the atrio-ventricular septum, atrio-ventricular node (AVN)
( c ) left upper corner of the right atrium, sino-atrial node (SAN); lower left corner of the right atrium close to the atrio-ventricular septum, atrio-ventricular node (AVN)
( d ) right upper corner of the right atrium, sino-atrial node (SAN); lower left corner of the right atrium close to the atrio-ventricular septum, atrio-ventricular node (AVN)
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(D) is the right answer.

A specialised cardiac musculature called the nodal tissue is also distributed in the heart. A patch of this tissue is present in the right upper corner of the right atrium called the sino-atrial node (SAN). Another mass of this tissue is seen in the lower left corner of the right atrium close to the atrio-ventricular septum called the atrio-ventricular node (AVN).
answered Mar 26, 2014 by pady_1
 

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