Chapter 11 - Cardiovascular System - Vocabulary

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Chapter 11 - Cardiovascular System - Vocabulary


 
  
Created Jul 3, 2012
by
ath215

 

 
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1
aorta
 
largest artery in the body
2
arteriole
 
small artery
3
artery
 
largest type of bloodvessel; carries blood away from the heart to all parts of the body. Notice...
4
atrioventricular bundle (bundle of His)
 
specialized muscle fibers connecting the atria with the ventricles and transmitting electrical...
5
atrioventricular node (AV node)
 
specialized tissue in the wall between the atria. Electrical impulses pass from the pacemaker...
6
atrium (plural: atria)
 
one of two upper chambers of the heart
7
capillary
 
smallest blood vessel. Materials pass to and from the bloodstream through the thin capillary...
8
carbon dioxide (CO2)
 
Gas (waste) released by body cells, transported via veins to the heart and then to the lungs...
9
coronary arteries
 
blood vessels that branch from the aorta and carry oxygen-rich blood to the heart muscle
10
deoxygenated blood
 
blood that is oxygen-poor
11
diastole
 
relaxation phase of the heartbeat
12
electrocardiogram
 
record of the electricity flowing through the hear. The electricity is represented by waves...
13
endocardium
 
inner lining of the heart
14
endothelium
 
innermost lining of blood vessels
15
mitral valve
 
valve between the left atrium and the left ventricle; bicuspid valve
16
murmur
 
abnormal swishing sound caused by improper closure of the heart valves
17
myocardium
 
muscular, middle layer of the heart
18
normal sinus rhythm
 
heart rhythm originating in the sinoatrial node with a resting rate of 60 to 100 beats per...
19
oxygen
 
gas that enters the blood through the lungs and travels to the heart to be pumped via arteries...
20
pacemaker (sinoatrial node)
 
specialized nervous tissue in the right atrium that begins the heartbeat. An artificial cardiac...
21
pericardium
 
double-layered membrane surrounding the heart
22
pulmonary artery
 
artery carrying oxygen-poor blood from the heart to the lungs
23
pulmonary circulation
 
flow of blood from the heart  to the lungs and back to the heart
24
pulmonary valve
 
valve positioned between the right ventricle and the pulmonary artery
25
pulmonary vein
 
one of two pairs of vessels carrying oxyenated blood from the lungs to the left atrium of the...
26
pulse
 
beat of the heart as felt through the walls of the arteries
27
septum (plural: septa)
 
partition or wall dividing a cavity; such as between the right and left atria (interatrial...
28
sinoatrial node (SA node)
 
pacemaker of the heart
29
sphygmomanometer
 
instrument to measure blood pressure
30
systemic circulation
 
flow of blood from body tissue to the heart and then from the heart bak to body tissues
31
systole
 
contraction phase of the heartbeat.
32
tricuspid valve
 
located between the right atrium and the right ventricle; it has three (tri-) leaflets, or...
33
valve
 
structure in veins or in the heart that temporarily closes an opening so that blood flows in...
34
vein
 
thin walled vessel that carries blood from body tissues and lungs back to the heart. Veins...
35
vena cava (plural: venae cavae)
 
largest vein in the body. The superior and inferior venae cavae return blood to the right atrium...
36
ventricle
 
one of two lower chambers of the heart
37
venule
 
small vein
38
acute coronary syndromes (ACSs)
 
unstable angina and myocardial infarction (heart attack), which are consequences of plaque...
39
angina (pectoris)
 
chest pain resulting from myocardial ischemia. Stable angina occurs predictably with exertion;...
40
angiotensin-converting enzyme (ACE) inhibitor
 
antihypertensive drug that blocks the conversion of angiotensin I to angiotensin II, causing...
41
auscultation
 
listening for sounds in blood vessels or other body structures, typically using a stethoscope
42
beta-blocker
 
drug used to treat angina, hypertension, and srrhymias.  It blocks the action of epinephrine...
43
biventricular pacemaker
 
device enabling ventricles to beat together (in synchrony) so that more blood is pumped out...
44
bruit
 
abnormal blowing or swishing sound heard during ausultation of an artery or orga
45
calcium channel blocker
 
drug used to treat angina and hypertension. It dilates blood vessels by blockibg the influx...
46
cardiac arrrest
 
sudden, unexpected stoppage of heart action; sudden cardiac death
47
cardiac tamponade
 
pressure on the heart caused by fluid in the pericardial space
48
claudication
 
pain, tension, and weakness in a leg after walking has begun, but absence of pain at rest
49
digoxin
 
drug that treats arrhythmias and strenghtens the heartbeat
50
embolus (plural: emboli)
 
clot or other substance that travels to a distant location and suddenly blocks a blood vessel
51
infarction
 
area of dead tissue
52
nitrates
 
drugs used in the treatment of angina.  They dilate blood vessels, increasing blood flow...
53
nitroglycerin
 
nitrate drug used in the treatment of angina
54
occclusion
 
closure of a blood vessel due to blockage
55
palpitations
 
uncomfortable sensations in the chest related to cardiac arrhythmias, sucha s premature ventricular...
56
patent
 
open
57
pericardial friction rub
 
scraping or grating noise heard on auscultation of the heart; suggestive of pericarditis
58
petechiae
 
small, pinpoint hemorrhages
59
statins
 
drugs used to lower cholesterol in the bloodstream
60
thrill
 
vibration felt over an area of turmoil in blood flow (as a blocked artery)
61
vegetations
 
clumps of platelets, clotting proteins, microorganisms, and red blood cells on diseased heart...


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