Is coronary sinus the same as coronary sulcus?
On the posterior surface of the heart, the coronary sulcus contains the coronary sinus.
What is a coronary sinus?
The coronary sinus is the major venous tributary of the greater cardiac venous system; it is responsible for draining most of the deoxygenated blood leaving the myocardium.
Where does the coronary sinus drain?
The coronary sinus empties directly into the right atrium near the conjunction of the posterior interventricular sulcus and the coronary sulcus (crux cordis area), located between the inferior vena cava and tricuspid valve; this atrial ostium can be partially covered by a Thebesian valve, although the anatomy of this …
What is the function of the coronary sinus and where is it located?
The coronary sinus collects the majority of the cardiac venous blood. It receives the blood from the myocardium, a thick layer of muscle within the heart, and facilitates the movement of the blood into the right atrium. The coronary sinus often serves as a landmark for surgeons who are performing cardiac surgery.
Which artery does the coronary sinus travel with?
The coronary sinus is a collection of veins joined together to form a large vessel that collects blood from the heart muscle (myocardium). It delivers less-oxygenated blood to the right atrium, as do the superior and inferior venae cavae….
| Coronary sinus | |
|---|---|
| TA98 | A12.3.01.002 |
| TA2 | 4158 |
| FMA | 4706 |
| Anatomical terminology |
Where is coronary sulcus located?
The coronary sulcus, separating the atria and ventricles, spans from the upper medial end of the third left costal cartilage to the middle of the right sixth chondrosternal joint.
Why coronary sinus is called sinus?
The name comes from the Latin corona, meaning crown, since this vessel forms a partial circle around the heart. The coronary sinus drains into the right atrium, at the coronary sinus orifice, an opening between the inferior vena cava and the right atrioventricular orifice or tricuspid valve.
What is a sinus of the heart?
The sinus node is an area of specialized cells in the upper right chamber of the heart. This area controls your heartbeat. Normally, the sinus node creates a steady pace of electrical impulses. The pace changes depending on your activity, emotions, rest and other factors.
Which vein continues as the coronary sinus?
great cardiac vein
The CS lies in the sulcus between the left atrium and ventricle and is a continuation of the great cardiac vein from the valve of the great cardiac vein to the ostium of the CS as it terminates in the right atrium.
Does the coronary sinus have a valve?
The valve of the coronary sinus (Thebesian valve) is a semicircular fold of the lining membrane of the right atrium, at the orifice of the coronary sinus. It is situated at the base of the inferior vena cava. The valve may vary in size, or be completely absent. This valve may be double or it may be cribriform.
Is coronary sinus rhythm normal?
Normal sinus rhythm is defined as the rhythm of a healthy heart. It means the electrical impulse from your sinus node is being properly transmitted. In adults, normal sinus rhythm usually accompanies a heart rate of 60 to 100 beats per minute. However, normal heart rates vary from person to person.
Do all cardiac veins drain into the coronary sinus?