Sinuatrial nodal artery
Encyclopedia
The sinuatrial nodal artery (or sinoatrial nodal artery) is an artery
of the heart
which supplies the sinoatrial node
, and usually arises from either the right coronary artery
or (less frequently) the circumflex branch of left coronary artery.
Artery
Arteries are blood vessels that carry blood away from the heart. This blood is normally oxygenated, exceptions made for the pulmonary and umbilical arteries....
of the heart
Heart
The heart is a myogenic muscular organ found in all animals with a circulatory system , that is responsible for pumping blood throughout the blood vessels by repeated, rhythmic contractions...
which supplies the sinoatrial node
Sinoatrial node
The sinoatrial node is the impulse-generating tissue located in the right atrium of the heart, and thus the generator of normal sinus rhythm. It is a group of cells positioned on the wall of the right atrium, near the entrance of the superior vena cava...
, and usually arises from either the right coronary artery
Right coronary artery
The right coronary artery originates above the right cusp of the aortic valve. It travels down the right atrioventricular groove, towards the crux of the heart.At the origin of the RCA is the conus artery....
or (less frequently) the circumflex branch of left coronary artery.