sinuatrial (S-A) nodal branch of right coronary artery

(redirected from artery to the sinuatrial (S-A) node)

sinuatrial (S-A) nodal branch of right coronary artery

[TA]
ascending atrial branch, usually (55%) arising from the anterior stem of the right coronary artery (but 35-45% arising from the circumflex branch of the left coronary artery), which runs around the base of the superior vena cava to reach the sinuatrial node.
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