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Chapter 9
(Cardiovascular System)
Question | Answer |
---|---|
ather/o | fatty (lipid) paste |
phleb/o | vein |
varic/o | swollen, twisted vein |
epicardium | membrane forming the outer layer of the heart |
pericardial cavity | fluid-filled cavity between the pericardial layers |
bicuspid valve | heart valve between the left atrium and the left ventricle (cuspis = point); also called the mitral valve |
aorta | large artery that is the main trunk of the arterial system branching from the left ventricle |
systemic circulation | circulation of blood throughout the body via arteries, arterioles, capillaries, venules, and veins to deliver oxygen and nutrients to body tissues |
systole | to contract; period during the cardiac cycle (complete heart beat) when the heart is in contraction and blood is ejected through the aorta and the pulmonary artery |
atrioventricular (AV) node | neurological tissue in the center of the heart that receives and amplifies the conduction of impulses from the SA node to the atrioventricular bundle (bundle of His) |
polarization | resting; resting state of a myocardial cell |
normal sinus rhythm (NSR) | regular rhythm of the heart cycle stimulated by the SA node (average rate of 60-100 beats/minute) |
arteriosclerosis | thickening, loss of elasticity, and calcification (hardening) of arterial walls |
diaphoresis | profuse sweating (perspiration) |
infarct | a localized area of necrosis (dead tissue cells) caused by ischemia resulting from occlusion of a blood vessel; to stuff into |
anastomosis | joining of two blood vessels to allow flow from one to the other |
valvuloplasty | surgical repair of a heart valve |
antherectomy | excision of atheromatous plaque from within an artery utilizing a device housed in a flexible catheter that selectively cuts away or pulverizes tissue buildup |
cardioversion | restoration of a fast of irregular heart rate to a normal rhythm, either by pharmaceuticals means or by delivery of electrical energy |
Angiotensin-converting enzyme (ACE) inhibitors | drug that suppresses the conversion of angiotensin in the blood by the angiotensin-covering |
anticoagulant | drug that prevents clotting of the blood; commonly used in the treatment of thrombophlebitis and myocardial infarction |
Beta Blockers | agents that inhibit responses to sympathetic adrenergic nerve activity causing a slowing of electrical conduction and heart rate and a lowering of the pressure within the walls of the vessels; used to treat angina pectoris and hypertension |
Vasodilators | drugs that cause dilation of the blood vessels, thereby increasing blood flow |
ACS | acute coronary syndrome |
CXR | chest x-ray |
ICD | implantable cardioverter-defibrillator |
PET | positron emission tomography |
STAT | immediately |
TPA | tissue plasminogen activator |
arrhythmia | any of several kinds of irregularity or loss of rhythm of the heartbeat |