1: Left coronary artery; 2: Circumflex branch; 3: Marginal branch of left ventricle; 4: Paraconal interventricular branch; 5: Right coronary artery; 6: Subsinuosal interventricular branch; 7: Marginal branch of right ventricle; 8: Septal artery; 9: Cast of cavity of left ventricle; 10: Ascending aorta; 11: Aortic arch;
What is the difference between coronary sinus and coronary sulcus?
The coronary sinus, the length of which varies from 15 to 65 mm, is found at the posterior part of the coronary sulcus on the diaphragmatic or posterior surface of the heart and is the principal collector of the venous blood of the heart.
What does the coronary sulcus drain into?
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 sulcus in heart?
External sulci or grooves correspond to the internal partitions that divide the heart into chambers. There are anterior and posterior interventricular sulci or grooves and a coronary sulcus (atrioventricular groove). The coronary sulcus is circumferential and separates the atria from the ventricles.
What is the difference between sinus and sulcus?
A sulcus, in general anatomy, is a groove – e.g. occipito-parietal sulcus between the corresponding lobes of the cerebrum in the case of the brain, whereas a sinus is like a (rounded) swelling or cavity e.g. [in the brain again] the cavernous sinus is a vein technically, within which run the ICA (internal carotid
What sulcus is the left coronary artery?
The AIV stems from the left coronary artery at the superior end of the anterior interventricular sulcus. It courses obliquely and anteroinferiorly along the anterior surface of the heart towards its apex, within the anterior interventricular sulcus.
What are the 5 major coronary arteries?
Structure
Left coronary artery (LCA) Left anterior descending artery. Left circumflex artery. Posterior descending artery. Ramus or intermediate artery.Right coronary artery (RCA) Right marginal artery. Posterior descending artery.
What is the main function of coronary arteries?
Coronary arteries supply blood to the heart muscle. Like all other tissues in the body, the heart muscle needs oxygen-rich blood to function. Also, oxygen-depleted blood must be carried away. The coronary arteries wrap around the outside of the heart.
What is right coronary sulcus?
The coronary sulcus is present between the atrium and the ventricles of the heart. Complete answer: The coronary groove or AV groove or coronary sulcus is a transverse groove that separates the atria from the ventricles. It is also known as the auriculoventricular grove and atrioventricular groove.
What are the landmarks of the heart?
These include four borders (superior, right, inferior, left) and four valves (left atrioventricular, right atrioventricular, aortic, pulmonary). The main reference points used for the surface projections of the heart are the borders of the sternum and costal cartilages, the clavicle and intercostal spaces.
How do the coronary arteries relate to the atrioventricular sulcus?
One, the atrioventricular groove, is along the line where the right atrium and the right ventricle meet; it contains a branch of the right coronary artery (the coronary arteries deliver blood to the heart muscle).
