20 results found

Search Results for: atrium

Atrium

Atrium (Science: anatomy) a chamber, used in anatomical nomenclature to designate a chamber affording entrance to another... Read More

Circulation

Blood Blood is composed of a liquid, plasma, and blood cells such as erythrocytes (red blood cells,) leukocytes (white... Read More

Atrioventricular valve

Definition noun, plural: atrioventricular valves The heart valve between the upper atrium and the lower ventricle, and... 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

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

Cor

Cor The muscular organ that maintains the circulation of the blood. C. Adiposum a heart that has undergone fatty... 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

Atria

Atria (Science: anatomy, cardiology) The thin-walled chambers of the heart that pump blood into the ventricles. Consists of... 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

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

Greater circulation

Greater circulation --> systemic circulation The circulation of blood through the arteries, capillaries, and veins of the... Read More

Atriotomy

Atriotomy (Science: procedure) surgical opening of an atrium. Origin: atrio-- g. Tome,... 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

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