EBR EMS Word Scramble
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Question | Answer |
angina pectoris | severe chest pain resulting when the myocardium is deprived of suffficient oxygen |
arteriole | small branch of an artery |
artery | vessel carrying blood away from the heart |
AV valve | two valves that seperate the atrial chambers from the ventricles |
atrium | chamber or cavity |
AV bundle | fibers in the heart that relay a nerve impulse from the AV node to the ventricles; also known as the bundle of His |
AV node | small mass of specialized cardiac muscle tissue; part of the conduction system of the heart |
bicuspid valve (mitral valve) | one of the two AV valves that are located between the left atrium and ventricle |
capillary | tiny vessels that connect arterioles and venules |
cardiac output | volume of blood pumped by one ventricle per minute |
cardiopulmonary resusitation | combined external cardiac massage and artificial respiration |
central venous pressure | venous blood pressure within the right atrium that influences the pressure in the large pripheral veins |
coronary artery | the first artery to branch off the aorta; supplies blood to the myocardium |
coronary bypass surgery | surgery to relieve severely restricted coronary blood flow; veins are take from other parts of the body to bypass the partial blockage |
coronary circulation | delivery of oxygen and removal of waste product from the myocardium |
coronary sinus | area that recieves deoxygenated blood from the coronary veins and empties into the right atrium |
coronary vein | |
diastole | relaxation of the heart, interposed between its contractions; opposite of systole |
diastolic pressure | blood pressure in arteries during diastole of heart |
ductus arteriosus | connects the aorta and the pulmonary artery, allowing most blood to bypass the fetus' developing lungs |
ductus venous | a continuation of the umbilical vein that shunts blood returning from the placenta past the fetus' developing liver directly into the inferior vena cava |
ECG (electrocardiogram) | graphic record of the heart's action potentials |
endocarditis | inflammation of the lining of the heart |
endocardium | thin layer of very smooth tissue lining each chamber of the heart |
epicardium | the inner layer of the pericardium that covers the surface of the heart; it is also called the visceral pericardium |
foramen ovale | shunts blood from the right atrium directly into the left atrium, allowing most blood to bypass the baby's developing lungs |
hepatic portal circulation | the route of blood flow through the liver |
myocardial infarction | death of cardiac muscle cells resulting from inadequate blood supply as in coronary thrombosis |
myocardium | muscle of the heart |
P wave | deflection on an ECG that occurs with depolarization of the atria |
pericarditis | when the pericardium becomes inflamed |
pericardium | membrane that surrounds the heart |
peripheral resistance | resistance to blood flow encountered in the peripheral arteries |
pulmonary circulation | venous blood flow from the right atrium to the lung and returning to the left atrium |
pulse | alternating expansion and recoil of the arterial walls produced by the alternate contraction and relaxation of the ventricles; travels as a wave away from the heart |
Purkinje fibers | specialized cells located in the walls of the ventricles; relay nerve impulses from the AV node to the ventricles causing them to contract |
QRS complex | deflection on an ECG that occurs as a result of depolarization of the ventricles |
semilunar valve | valves located between the two ventricular chambers and the large arteries that carry blood away from the heart; valves found in the veins |
sinoatrial node | the heart's pacemaker; where the impulse conduction of the heart normally starts; located in the wall of the right atrium near the opening of the superior vena cava |
stroke volume | the amount of blood that is ejected from the ventricles of the heart with each beat |
systemic circulation | blood flow from the left ventricle to all parts of the body and back to the right atrium |
systole | contraction of the heart muscle |
systolic pressure | force with which blood pushes against artery walls when ventricles contract |
T wave | deflection on an electrocardiogram that occurs with repolarization of the ventricles |
tricuspid valve | the valve located between the right atrium and ventricle |
umbilical artery and vein | artery: two arteries carrying oxygen poor blood away from the developing fetus to the placentavein: carries oxygen rich blood from the placenta to the developing fetus |
vasomotor mechanism | factors that control changes in the diameter of arterioles by changing the tension of smooth muscles in the vessel walls |
vein | vessel carrying blood toward the heart |
ventricle | small cavities |
venule | small blood vessels that collect blood from the capillaries and join to form veins |
Created by:
hjkruse
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