Cardiac Veins (other)

	Cardiac Veins (other) Cardiac veins can refer to: * Coronary sinus * Great cardiac vein (also known as the left coronary vein) * Middle cardiac vein * Small cardiac vein (also known as the right coronary vein) * Smallest cardiac veins (also known as the Thebesean veins) * Anterior cardiac veins The anterior cardiac veins (or anterior veins of right ventricle) comprise a variable number of small vessels, usually between two and five, which collect blood from the front of the right ventricle and open into the right atrium; the right margina ... {{Disambig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Coronary Sinus In anatomy, 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 deoxygenated blood to the right atrium, as do the superior and inferior venae cavae. It is present in all mammals, including humans. 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. It returns blood from the heart muscle, and is protected by a semicircular fold of the lining membrane of the auricle, the valve of coronary sinus (or valve of Thebesius). The sinus, before entering the atrium, is considerably dilated - nearly to the size of the end of the little finger. Its wall is partly muscular, and at its junction with the great cardiac vein is somewhat constricted and furnished with a valve, known as the valve of Vieussens consisting of two unequal segments. Structure The coron ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Great Cardiac Vein The great cardiac vein (left coronary vein) begins at the apex of the heart and ascends along the anterior longitudinal sulcus to the base of the ventricles. It then curves around the left margin of the heart to reach the posterior surface. It merges with the oblique vein of the left atrium to form the coronary sinus, which drains into the right atrium. At the junction of the great cardiac vein and the coronary sinus, there is typically a valve present. This is the Vieussens valve of the coronary sinus. It receives tributaries from the left atrium and from both ventricles: one, the left marginal vein The great cardiac vein receives tributaries from the left atrium and from both ventricles: one, the left marginal vein, is of considerable size, and ascends along the left margin of the heart The heart is a muscular organ in most animals ..., is of considerable size, and ascends along the left margin of the heart. References External links * - "Heart: Cardiac veins" ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Middle Cardiac Vein The middle cardiac vein commences at the apex of the heart; ascends in the posterior longitudinal sulcus, and ends in the coronary sinus In anatomy, 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 deoxygenated blood to the right atrium, as do the superior and inferior vena ... near its right extremity. Structure Variation The middle cardiac vein has a constant location on the surface of the ventricles. Clinical significance The middle cardiac vein is useful for epicardial access to the inferior side of the ventricles. References External links * - "Posterior view of the heart." Veins of the torso {{circulatory-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Small Cardiac Vein The small cardiac vein, also known as the right coronary vein, is a coronary vein that drains the right atrium and right ventricle of the heart. Despite its size, it is one of the major drainage vessels for the heart. Location The small cardiac vein runs in the coronary sulcus between the right atrium and right ventricle, and opens into the right extremity of the coronary sinus. Function The small cardiac vein receives blood from the posterior portion of the right atrium and ventricle. Variations The small cardiac vein may drain to the coronary sinus, right atrium, middle cardiac vein The middle cardiac vein commences at the apex of the heart; ascends in the posterior longitudinal sulcus, and ends in the coronary sinus In anatomy, the coronary sinus () is a collection of veins joined together to form a large vessel that c ..., or be absent. References External links * - "Anterior view of the heart." {{Authority control Veins of the torso ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Smallest Cardiac Veins In the anatomy of the heart, the smallest cardiac veins, also known as the Thebesian veins (for Adam Christian Thebesius), are small valveless veins in the walls of all four heart chambers. Structure Course The smallest cardiac veins are most abundant in the right atrium and least in the left ventricle. They drain the myocardium. They run a perpendicular course to the endocardial surface, directly connecting the heart chambers to the medium-sized, and larger coronary veins. The smallest cardiac veins have been successfully identified by following the route of contrast flow - during catheterization procedures - from the subendocardium, through the smallest cardiac veins, into larger veins, and into the coronary sinus. The coronary sinus empties into the right atrium. Openings The ''openings of the smallest cardiac veins'' are located in the endocardium. Here the smallest cardiac veins return blood into the heart chambers from the capillary bed in the muscular cardiac wall, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]