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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 ...
Left heart. The left heart has two chambers: the left atrium and the left ventricle, separated by the mitral valve. The left atrium receives oxygenated blood back from the lungs via one of the four pulmonary veins. The left atrium has an outpouching called the left atrial appendage.
Heart valve sequence. Try Puling My Aorta: p. 3. Tricuspid Pulmonary Mitral (bicuspid) Aorta. Heart blocks. If the R is far from P, then you have a First Degree. Longer, longer, longer, drop! Then you have a Wenkebach. if some P's don't get through, then you have Mobitz II. If P's and Q's don't agree, then you have a Third Degree.
A list of veins in the human body: Veins of the heart. Coronary sinus. Great cardiac vein. Oblique vein of left atrium. Middle cardiac vein. Small cardiac vein. Pulmonary veins. Superior vena cava.
Coronary circulation is the circulation of blood in the arteries and veins that supply the heart muscle (myocardium). Coronary arteries supply oxygenated blood to the heart muscle. Cardiac veins then drain away the blood after it has been deoxygenated. Because the rest of the body, and most especially the brain, needs a steady supply of ...
The pulmonary circulation is a division of the circulatory system in all vertebrates. The circuit begins with deoxygenated blood returned from the body to the right atrium of the heart where it is pumped out from the right ventricle to the lungs. In the lungs the blood is oxygenated and returned to the left atrium to complete the circuit.
The left coronary artery arises from the aorta within the left cusp of the aortic valve and feeds blood to the left side of the heart. It branches into two arteries, the left anterior descending and the left circumflex. The left anterior descending artery perfuses the interventricular septum and anterior wall of the left ventricle. The left ...
Venae cavae. In anatomy, the venae cavae ( / ˈviːni ˈkeɪvi /; [1] sg.: vena cava / ˈviːnə ˈkeɪvə /; from Latin 'hollow veins') [2] are two large veins ( great vessels) that return deoxygenated blood from the body into the heart. In humans they are the superior vena cava and the inferior vena cava, and both empty into the right atrium. [3]