Everything about The Coronary Sinus totally explained
The
coronary sinus is a collection of veins joined together to form a large vessel that collects blood from the
myocardium of the
heart. It is present in humans and other animals.
Location
It is located between the
left atrium and ventricle on the posterior surface of the heart.
It runs transversely in the groove between the left atrium and ventricle on the posterior surface of the heart.
The
coronary sinus orifice (opening) is just superior to the septal leaflet of the
tricuspid valve. The coronary sinus orifice is also known as the ostium of the coronary sinus, and is guarded by the
Thebesian valve.
Drainage
It receives blood mainly from the
small,
middle,
great and
oblique cardiac veins. It also receives blood from the
left marginal vein and the
left posterior ventricular vein. The
anterior cardiac veins drain directly into the
right atrium. (Some small veins drain into any of the four chambers of the heart.)
It drains into the
right atrium on the posterior, inferior surface, medial to the inferior vena cava opening.
Additional images
Image:Gray480.png|Diagram showing completion of development of the parietal veins.
Further Information
Get more info on 'Coronary Sinus'.
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