Chapter 11 - Cardiovascular System - Vocabulary

Chapter 11 - Cardiovascular System - Vocabulary
Created Jul 3, 2012
by ath215
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Side ASide B
aorta
largest artery in the body
arteriole
small artery
artery
largest type of bloodvessel; carries blood away from the heart to all parts of the body. Notice...
atrioventricular bundle (bundle of His)
specialized muscle fibers connecting the atria with the ventricles and transmitting electrical...
atrioventricular node (AV node)
specialized tissue in the wall between the atria. Electrical impulses pass from the pacemaker...
atrium (plural: atria)
one of two upper chambers of the heart
capillary
smallest blood vessel. Materials pass to and from the bloodstream through the thin capillary...
carbon dioxide (CO2)
Gas (waste) released by body cells, transported via veins to the heart and then to the lungs...
coronary arteries
blood vessels that branch from the aorta and carry oxygen-rich blood to the heart muscle
deoxygenated blood
blood that is oxygen-poor
diastole
relaxation phase of the heartbeat
electrocardiogram
record of the electricity flowing through the hear. The electricity is represented by waves...
endocardium
inner lining of the heart
endothelium
innermost lining of blood vessels
mitral valve
valve between the left atrium and the left ventricle; bicuspid valve
murmur
abnormal swishing sound caused by improper closure of the heart valves
myocardium
muscular, middle layer of the heart
normal sinus rhythm
heart rhythm originating in the sinoatrial node with a resting rate of 60 to 100 beats per...
oxygen
gas that enters the blood through the lungs and travels to the heart to be pumped via arteries...
pacemaker (sinoatrial node)
specialized nervous tissue in the right atrium that begins the heartbeat. An artificial cardiac...
pericardium
double-layered membrane surrounding the heart
pulmonary artery
artery carrying oxygen-poor blood from the heart to the lungs
pulmonary circulation
flow of blood from the heart  to the lungs and back to the heart
pulmonary valve
valve positioned between the right ventricle and the pulmonary artery
pulmonary vein
one of two pairs of vessels carrying oxyenated blood from the lungs to the left atrium of the...
pulse
beat of the heart as felt through the walls of the arteries
septum (plural: septa)
partition or wall dividing a cavity; such as between the right and left atria (interatrial...
sinoatrial node (SA node)
pacemaker of the heart
sphygmomanometer
instrument to measure blood pressure
systemic circulation
flow of blood from body tissue to the heart and then from the heart bak to body tissues
systole
contraction phase of the heartbeat.
tricuspid valve
located between the right atrium and the right ventricle; it has three (tri-) leaflets, or...
valve
structure in veins or in the heart that temporarily closes an opening so that blood flows in...
vein
thin walled vessel that carries blood from body tissues and lungs back to the heart. Veins...
vena cava (plural: venae cavae)
largest vein in the body. The superior and inferior venae cavae return blood to the right atrium...
ventricle
one of two lower chambers of the heart
venule
small vein
acute coronary syndromes (ACSs)
unstable angina and myocardial infarction (heart attack), which are consequences of plaque...
angina (pectoris)
chest pain resulting from myocardial ischemia. Stable angina occurs predictably with exertion;...
angiotensin-converting enzyme (ACE) inhibitor
antihypertensive drug that blocks the conversion of angiotensin I to angiotensin II, causing...
auscultation
listening for sounds in blood vessels or other body structures, typically using a stethoscope
beta-blocker
drug used to treat angina, hypertension, and srrhymias.  It blocks the action of epinephrine...
biventricular pacemaker
device enabling ventricles to beat together (in synchrony) so that more blood is pumped out...
bruit
abnormal blowing or swishing sound heard during ausultation of an artery or orga
calcium channel blocker
drug used to treat angina and hypertension. It dilates blood vessels by blockibg the influx...
cardiac arrrest
sudden, unexpected stoppage of heart action; sudden cardiac death
cardiac tamponade
pressure on the heart caused by fluid in the pericardial space
claudication
pain, tension, and weakness in a leg after walking has begun, but absence of pain at rest
digoxin
drug that treats arrhythmias and strenghtens the heartbeat
embolus (plural: emboli)
clot or other substance that travels to a distant location and suddenly blocks a blood vessel
infarction
area of dead tissue
nitrates
drugs used in the treatment of angina.  They dilate blood vessels, increasing blood flow...
nitroglycerin
nitrate drug used in the treatment of angina
occclusion
closure of a blood vessel due to blockage
palpitations
uncomfortable sensations in the chest related to cardiac arrhythmias, sucha s premature ventricular...
patent
open
pericardial friction rub
scraping or grating noise heard on auscultation of the heart; suggestive of pericarditis
petechiae
small, pinpoint hemorrhages
statins
drugs used to lower cholesterol in the bloodstream
thrill
vibration felt over an area of turmoil in blood flow (as a blocked artery)
vegetations
clumps of platelets, clotting proteins, microorganisms, and red blood cells on diseased heart...

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