Sino atrial node
Heart excitation originates in the sino-atrial node.
cardiac cycle The sino-atrial node, otherwise known as the pacemaker.
A suitable isotonic solution would keep a heart beating outside of the body. Additionally, charges can be inserted into the solution to keep the Sino-atrial node in constant functioning.
The sino-atrial node (or SA node) is located in the right atrium, just below the entrance of the superior vena cava in the upper right portion of the right atrium.
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