Chapter 6, Cardiovascular, page 163-166 Flashcards
Aorta
Largest artery of the body; vessel through which oxygenated blood exits the heart.
Aortic valve
Valve between the aorta and the left ventricle.
Arteriole
A tiny artery connecting to a capillary.
Artery
A thick-walled blood vessel that, in systemic circulation, carries oxygenated blood away form the heart.
Atrioventricular bundle
Bundle of fibers in the interventricular septum that transfers charges in the heart’s conduction system; also called bundle of His.
Atrioventricular (AV) node
Specialized part of the interatiral 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
Atrioventricular valve on the left side of the heart; mitral valve.
Blood
Essential fluid made up of plasma and other elements that circulates throughout the body; delivers nutrients to and removes waste from the body’s 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 through which blood travels.
Capillary
The smallest blood vessel that forms the exchange point between the arterial and venous vessels.
Carbon dioxide (CO2)
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 theat transports oxygenated blood to the head and neck.
Conduction system
Part of the heart containing specialized tissue that send electrical charges through heart fibers, causing the heart to contract and relax at regular intervals.
Coronary artery
Blood vessel that supplies 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.