Coronary sinus
Coronary Sinus
Coronary sinus (kəˈrɒnəri ˈsaɪnəs) is a part of the heart that carries deoxygenated blood from the myocardium (heart muscle) to the right atrium.
Etymology
The term "coronary" is derived from the Latin corona, meaning "crown", and the term "sinus" is derived from the Latin sinus, meaning "bay" or "fold". The coronary sinus is so named because it is a large vessel that partially encircles the heart, much like a crown.
Anatomy
The coronary sinus is located in the posterior part of the coronary sulcus, separating the atria and the ventricles of the heart. It receives blood from the great cardiac vein, the middle cardiac vein, the small cardiac vein, and the anterior cardiac veins.
Function
The primary function of the coronary sinus is to collect deoxygenated blood from the myocardium and deliver it to the right atrium, where it is then sent to the lungs for oxygenation.
Related Terms
- Great cardiac vein
- Middle cardiac vein
- Small cardiac vein
- Anterior cardiac veins
- Right atrium
- Myocardium
- Coronary sulcus
- Atria
- Ventricles
- Heart
- Lungs
External links
- Medical encyclopedia article on Coronary sinus
- Wikipedia's article - Coronary sinus
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