Chapter 6 - The Cardiovascular System Flashcards
Aorta
Largest artery of the body; vessel through which oxygenated blood exits the heart
Aortic valve
Valve between the aorta and left ventricle
Arteriole
a tiny artery connecting to a capillary
Artery
A thick-walled blood vessel that, in systemic circulation, carries oxygenated blood away from the heart
Atrioventricular bundle, Bundle of His
bundle of fiberss in the interventricuular septum that transfers charges in the heart’s conduction system; also called bundle of His
Atrioventricular node (AV node)
specialized part of the interatrial septum that sends a charge to the bundle of His
atrioventricular valve
One of two valves that control blood flow between the atria and ventricles
atrium (pl. atria)
Either of the two upper chambers of the heart
Bicuspid valve, Mitral valve
atrioventricular valve on the left side of the heart
blood
Essential fluid made up of plasma and other elements that circulates throughout the body; delivers nutrients to and remove waste from the body cells
Blood pressure
Measure of the force of blood surging against the walls of the arteries
Blood vessel
Any of the tubular passageways in the cardiovascular system in which blood travels
Capillary
The smallest blood vessel that forms the exchange point between arterial and venous vessels
Carbon dioxide
Waste material transported in the venous blood
Cardiac cycle
Repeated contraction and relaxation of the heart as it circulates blood within itself and pumps it out to the rest of the body or the lungs
Cardiovascular
Relating to or affecting the heart and blood vessels
Carotid artery
Artery that transports oxygenated blood to the head and neck
Conduction system
Part of the heart containing specialized tissue that sends electrical charges through heart fibers, causing the heart to contract and relax at regular intervals
Coronary arteries
Blood vessels that supply oxygen-rich blood to the heart
Depolarization
Contracting state of the myocardial tissue in the heart’s conduction system
Diastole
Relaxation phase of a heartbeat
ductus arteriosus
Structure in the fetal circulatory system through which blood flows to bypass the fetus’s nonfunctioning lungs
ductus venosus
stcutrue in the fetal circulatory system through which blood flow to bypass the fetal liver
Endocardium
Membranous lining of the chambers and valves of a heart; the innermost layer of heart tissue