Search Results for: atrium
Atrioventricular valve
Definition noun, plural: atrioventricular valves The heart valve between the upper atrium and the lower ventricle, and... Read More
Circulation
Blood Blood is composed of a liquid, plasma, and blood cells such as erythrocytes (red blood cells,) leukocytes (white... Read More
Tricuspid valve
Definition noun, plural: tricuspid valves The heart valve located on the right side of the heart between the right atrium... Read More
Myocardium
Myocardium Definition What is the myocardium of the heart? It is the muscular middle layer of the heart that is... Read More
Mitral valve
Definition noun, plural: mitral valves The valve between the left atrium and left ventricle of the heart, and has two... Read More
Stannius ligature
Definition noun A ligature done in between the sinus venosus and the atrium or around the atrioventricular junction of an... Read More
Three-chambered heart
Three-chambered heart congenital abnormality in which there may be a single atrium with two ventricles or a single ventricle... Read More
Cardiovascular system
Definition noun The organ system in which the blood is pumped through the heart and circulates throughout the body through... Read More
Sinus venosus
Definition noun In embryo, the cavity caudad of cardiac tube where the veins from the intra- and extraembryonic circulatory... Read More
Semilunar valve
The human heart structure consists of heart chambers (2 atria and 2 ventricles) that differ functionally from each other.... Read More
Intervenous tubercle
Intervenous tubercle The slight projection on the wall of the right atrium between the orifices of the venae cavae. Synonym:... Read More
Greater circulation
Greater circulation --> systemic circulation The circulation of blood through the arteries, capillaries, and veins of the... Read More
Bainbridge reflex
Definition A rise in the heart rate due to a rise in blood pressure in the right atrium, which in turn is caused by an... Read More
Atrioventricular sulcus
Definition noun (anatomy) A sulcus or a groove on the outer surface of the heart marking the division between the atria and... Read More
Depolarization
Depolarization is the removal of polarity by a process or action. It might also be used to describe how such activity leads... Read More
Heart valve
Definition noun, plural: heart valves (anatomy) Any of the valves of the heart that prevents the back flow of blood through... Read More