Med Term 6 & 12 Flashcards
Aortic
Valve between aorta and left ventricle
Aorta
Largest artery of the body
Oxygenated blood exits the heart
Arteriole
Tiny artery connecting to a capillary
Artery
Thick walled blood vessel
Carries oxygenated blood away from heart
Atrioventricular
Bundle of fibers in the inter ventricular septum
Transfers charges in the heart’s conduction system
His
Atrioventricular node AV
Specialized part of 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 ventricules
Atrium
Either of the two upper chambers of the heart
Bicuspid
Atrioventricular valve on the left side of heart
Blood
Made of plasma
Circulates through body
Delivers nutrients
Blood pressure
Measure of the force of blood surging through arteries
Blood vessel
Any tubular passageways in cardiovacular system
Bundle of His
Atrioventricular bundle
Capillary
Smallest blood vessel
Exchange point between arterial and venous vessels
Carbon dioxide
Waste material transported in venous blood
Cardiac cycle
Repeated contraction and relaxation of heart as it circulates blood within itself and pumps it out to the rest of the body
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 artery
Blood vessel that supplies oxygen rich blood the heart
Depolarization
Contracting state of the myocardial tissue in heart’s conduction system
Diastole
Relaxation phase of heart beat
Ductus arteriosus
Structure in fetal circulatory system through which blood flows to bypass the fetus’s nonfunctioning lungs
Ductus venosus
Structure in the fetal circulatory system through which blood flows to bypass the fetal liver
Endocardium
Membranous lining of chambers and valves of heart
Innermost layer of heart tissue
Endothelium
Lining of the arteries that secretes substances into blood
Epicardium
Outermost layer of heart tissue
Femoral artery
Artery that supplies blood to thigh
Foramen ovale
Opening in septum of the fetal heart and closes at birth
Heart
Muscular organ that receives blood from veins and sends out to arteries
Inferior vena cave
Large vein that draws blood from the lower part of body to the right atrium
Left atrium
Upper left heart chamber
Left ventricle
Lower left heart chamber
Lumen
Channel inside artery through which blood flows
Mitral
Bicuspid valve
Myocardium
Muscular layer of heart tissue between epicardium and endocardium
Pacemaker
Term for sinoarterial (SA) node
Artificial device that regulates heart rhythm
Pericardium
Protective covering of heart
Polarization
Resting state of myocardial tissue in conduction system of heart
Popliteal artery
Artery that supplies blood to cells of area behind knee
Pulmonary artery
one of two arteries that supplies blood that is low in oxygen from heart to the lungs
Pulmonary valve
Controls the blood flow between the right ventricle and pulmonary arteries
Pulmonary vein
One of four veins that bring oxygenated blood from the lungs to the left atrium
Pulse
Rhythmic expansion and contraction of a blood vessel (artery)
Repolarization
Recharging state
Transition from contraction to resting that occurs in conduction system
Right atrium
Upper right chamber of heart
Right ventricle
Lower right chamber of heart
Saphenous vein
Any of a group of veins that transport deoxygenated blood from legs
Semilunar valve
One of two valves that prevent the back flow of blood flowing out of heart into aorta and pulmonary artery