click below
click below
Normal Size Small Size show me how
68WM6 Cardiac
68WM6 10-10 Cardiac System
| Question | Answer |
|---|---|
| Aorta | The major systemic artery that receives blood from the left ventricle |
| Arteriole | A small branch of an artery that communicates with a capillary network |
| Artery | Thick-walled elastic vessels that always carry blood away from the heart |
| Atrium | Chamber of the heart that receives blood |
| Capillary | A small blood vessel that connects an arteriole and a venule |
| Cardiac cycle | A series of myocardial contractions and relaxations that constitute a complete heartbeat |
| Cardiac output | The volume of blood per minute that the heart pumps |
| Diastole | Phase of the cardiac cycle when a heart chamber wall relaxes |
| Electrical event | The electrical conduction of the heart as visualized on the EKG |
| Endocardium | Inner lining of the heart chambers |
| Epicardium | The visceral portion of the pericardium on the surface of the heart |
| Ischemia | Deficiency of blood in a body part |
| Mechanical Event | The muscular contraction of the heart that sends blood out of the heart |
| Mitral valve | Heart valve between left atrium and left ventricle also known as the bicuspid valve |
| Myocardium | Muscle tissue of the heart |
| Myocardial Infarction | A MI is the irreversible necrosis of heart muscle secondary to prolonged ischemia |
| Pacemaker | Mass of specialized muscle tissue that controls the rhythm of the heartbeat,Sinoatrial node,Atrioventricular node |
| Stroke volume | The volume of blood that each ventricle discharges in a heartbeat |
| Systole | The phase of the cardiac cycle when a heart chamber wall contracts |
| Systemic circulation | Involves movement of blood from the left ventricle throughout the body and back to the right atrium |
| Vasoconstriction | A decrease in the diameter of a blood vessel |
| Vasodilatation | An increase in the diameter of a blood vessel |
| Vein | A vessel that carries blood toward the heart |
| Vena Cava | The large vein that conveys deoxygenated blood to the right atrium |
| Ventricle | Chamber of the heart that contract to send blood the lungs and body |