[Answer] Where is the SA node located?

Answer: Right Atrium

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Where is the SA node located? Definition of SA node Sinoatrial node - Wikipedia Internodal Pathways - RightDiagnosis.com The sinoatrial node is a banana-shaped structure that varies in size usually between 10-30 millimeters (mm) long 5–7 mm wide and 1–2 mm deep. The SA node is located in the wall (myocardium) of the right atrium laterally to the entrance of the superior vena cava in a region called the sinus venarum (hence sino- + atrial). It is positioned roughly between a groove called the crista terminalis located on the internal surface of the heart and the corresponding sulcu… Thu Dec 27 2018 · The SA node is the heart's natural pacemaker. The SA node consists of a cluster of cells that are situated in the upper part of the wall of the right atrium (the right upper chamber of the heart ). The electrical impulses are generated there. The SA node is also called the sinus node. The SA node is the primary; the atrioventricular node ( AV node ) located in a bundle of tissues on the border between the right atrium and the right ventricle is the secondary. When the SA node sends out an electrical impulse the first place it goes is to the AV node. Thu Jul 18 2019 · Sinoatrial (SA) Node The sinoatrial node also referred to as the pacemaker of the heart coordinates heart contractions. Located in the upper wall of the right atrium it generates nerve impulses that travel throughout the heart wal...

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