What Is the Coronary Sinus?
The main entrance to the heart wall veins. There is a coronary sinus valve at the posterior edge of the sinus opening, and the smallest heart vein opens directly into the right atrium.
- Chinese name
- Coronary sinus
- lie in
- In the coronary sulcus behind the heart
- Belong to
- Cardiac wall venous return
- At the beginning
- Sinus
- The main entrance to the heart wall veins. There is a coronary sinus valve at the posterior edge of the sinus opening, and the smallest heart vein opens directly into the right atrium.
Coronary sinus physiological position
- Most of the heart's veins come together first. It is about 5cm long and is located at the back of the coronary sulcus, between the left atrium and the left ventricle.
Anatomy of coronary sinus heart vein
- Cardiac veins start in various parts of the heart muscle, one part flows to the surface of the heart, and the other directly flows into the heart cavity. The former is the superficial cardiac vein, and its main branches are the major cardiac vein, middle cardiac vein, and small cardiac vein. The latter is a deep myocardial vein that flows mainly into the right atrium. In addition, there is still a sinusoid in the heart, which connects the superficial veins and the heart cavity. Venae cardismagna: It starts from the apex or 1/3 (82%) of the anterior interventricular sulcus, runs up the sulcus with the left anterior interventricular branch, and receives 5 anterior left ventricles in the anterior interventricular sulcus. Veins and a few small veins in the anterior wall of the right ventricle. In the upper third of anterior interventricular sulcus, not accompanied by arteries, diagonally to the coronary sulcus, receiving 3 to 4 right ventricular anterior veins, 1 to 2 left atrium veins, and pure marginal veins, to be turned to the plantar surface of the heart Later, the left end of the coronary sinus was injected; Venae cardis-media: It started from before the apex, and then turned into the posterior ventricular sulcus, followed by the posterior ventricular sulcus, and was injected into the right end of the coronary sinus near the atrioventricular intersection. Venous blood from the posterior wall of the two ventricles, the posterior ventricular septum, the posterior apex, and part of the anterior ventricle is drained along the way; Venae cardis parva: There are many variations, 55% of the heart has only one, and 45% of the heart In the absence, most of the small cardiac veins originate from the sharp edge, but also from the posterior wall of the right ventricle, and go to the left of the heart through the right margin of the coronary sulcus to the left and inject the right end of the coronary sinus or the middle cardiac vein. Coronary sinus (coronary sinus): It is a continuation of the large cardiac veins. It is located in the coronary sulcus of the left atrium and the left ventricular plantar surface. The coronary sinus is injected into the right atrium and opens between the inferior vena cava valve and the right atrioventricular ostium. Most of the valves have a valve at the opening, called the thebesius valve (valbeula sinus coronaril). It is a semilunar valve, but there are also no valves or hypoplasia. The initial part of the coronary sinus is thin and easily damaged, and the other sinus walls are slightly thicker. Coronary sinus not only accepts three major cardiac veins, middle cardiac veins, or small cardiac veins, it also accepts some branches: the left ventricle vein and the left atrial vein. In addition, there are some veins that directly return to the human heart cavity. For example, the anterior right ventricle vein is injected into the right atrium or small cardiac vein; the posterior right ventricle vein is injected into the right atrium or small cardiac vein. Some small veins in the myocardium are called venae cordis minimae or thebesi veins. There are many anastomotic branches between heart veins, forming a strong anastomotic network, and communicating with the outer vein network of the aortic wall.