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Most of the blood of the coronary veins returns through the coronary sinus. The anatomy of the veins of the heart is very variable, but generally it is formed by the following veins: heart veins that go into the coronary sinus: the great cardiac vein, the middle cardiac vein, the small cardiac vein, the posterior vein of the left ventricle, and ...
The coronary arteries can constrict as a response to various stimuli, mostly chemical. This is known as a coronary reflex . There is also a rare condition known as spontaneous coronary artery dissection , in which the wall of one of the coronary arteries tears, causing severe pain. [ 10 ]
The coronary circulation begins near the origin of the aorta by two coronary arteries: the right coronary artery and the left coronary artery. After nourishing the heart muscle, blood returns through the coronary veins into the coronary sinus and from this one into the right atrium.
The heart is a muscular organ situated in the mediastinum.It consists of four chambers, four valves, two main arteries (the coronary arteries), and the conduction system. The left and right sides of the heart have different functions: the right side receives de-oxygenated blood through the superior and inferior venae cavae and pumps blood to the lungs through the pulmonary artery, and the left ...
Posterior vein of left ventricle (accompanies the left marginal artery, ascends the posterior wall of left ventricle to drain into the coronary sinus); [6] Oblique vein of left atrium. [1] All veins that empty into the coronary sinus except for the oblique vein of the left atrium have valves at their junction with the coronary sinus. [1]
The right marginal branch is the largest branch to split off from the right coronary artery. [ 1 ] [ 2 ] It often anastomoses with the nearby parallel posterior interventricular artery , which itself is usually a continuation of the right coronary artery.
The small cardiac vein, also known as the right coronary vein, [1] is a coronary vein that drains parts of the right atrium and right ventricle of the heart. [2] Despite its size, it is one of the major drainage vessels for the heart.
The middle cardiac vein commences at the apex of the heart. It passes posteriorly along the inferior interventricular sulcus to end at the coronary sinus near the sinus' termination. [ 1 ]