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Chapter 9
Cardiovascular System
125
Medical
Professional
10/02/2010

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Term
aorta
Definition
the main trunk of the systemic arterial system
Term
aortic valve
Definition
connects the left ventricle to the aorta
Term
arteries
Definition
the largest of the blood vessels that carry blood away from the heart
Term
arterioles
Definition
the smallest arteries that connect with the capillaries
Term
atria
Definition
upper two of the four heart chambers, composed of the right atrium and left atrium
Term
atrioventricular node
Definition
fibers located at the base of the right atrium near the ventricle that carry electrical stimulation to the bundle
Term
basophil
Definition
a white blood cell with granules that stain with basic dyes
Term
bicuspid or mitral valve
Definition
connects the left atrium to the left ventricle
Term
bundle of His
Definition
located at the top of the interventricular septum; carries electrical impulses from the atrioventricular node to Purkinje fibers
Term
capillaries
Definition
the smallest of the blood vessels
Term
cardiac cycle
Definition
a complete round of systole and diastole
Term
diastole
Definition
relaxation phase of the heart
Term
endocardium
Definition
the inner surface of the heart
Term
eosinophil
Definition
a while blood cell that stains with certain dyes
Term
epicardium
Definition
the outer covergin of the heart
Term
erythrocytes
Definition
red blood cells; abbreviated RBD
Term
heart rate
Definition
the number of times per minute the heart contracts
Term
hemoglobin
Definition
the protein that gives blood its red color; abbreviated Hb
Term
inferior vena cava
Definition
large vein that collects blood from the smaller veins of the lower body
Term
left atrium
Definition
upper left heart chamber
Term
left ventricle
Definition
lower left heart chamber
Term
leukocytes
Definition
white blood cells; abbreviated WBC
Term
mitral or bicuspid valve
Definition
connects the left atrium to the left ventricle
Term
monocyte
Definition
a relatively large white blood cell
Term
myocardium
Definition
the heart muscle, which includes nerves and blood vessles
Term
neutrophil
Definition
a mature white blood vessel normally constituting more than half of the total number of leukocytes
Term
pericardial sac
Definition
another lining of the pericardium closest to the heart
Term
pericardium
Definition
serous membrane lining the pericardial cavity
Term
phagocyte
Definition
a white blood cell capable of ingesting bacteria and other foreign matter
Term
plasma
Definition
as differentiated from its nonmedical context, the yellow fluid that makes up a bit more than half of whole blood by volume
Term
platelets
Definition
smallest of the formed elements; important in the coagulation process; also called thrombocytes
Term
pulmonary artery
Definition
vessel that carries deoxygenated blood from the right ventricle to the lungs
Term
pulmonary valve
Definition
valve connecting the right ventricle and lungs
Term
pulmonary veins
Definition
vessels that carry oxygenated blood from the lungs to the left atrium
Term
pulse
Definition
rhythmic expansion and contraction of an artery produced by pressure of the blood moving through the artery
Term
Purkinje fibers
Definition
fibers that carry stimulation throughout the ventricles
Term
Rh factor
Definition
an antigen, first discovered in the rhesus monkey; a person is either Rh positive or negative
Term
right atrium
Definition
upper right chamber of the heart
Term
right ventricle
Definition
lower right heart chamber
Term
septa (singular septum)
Definition
thin wall that separates cavities or masses; in the heart, septa separate the right atrium from the left atrium and the right ventricle from the left ventricle
Term
sinoatrial node
Definition
known as the pacemaker of the heart; electrical impulse originates here
Term
sinus rhythm
Definition
normal rhythm of the heartbeat
Term
superior vena cava
Definition
large vein that collects blood from the smaller veins of the upper body
Term
systole
Definition
contraction phase of the heart
Term
tricuspid valve
Definition
valve connecting the right atrium to the right ventricle (right atrioventricular valve)
Term
troponin
Definition
a protein that is released into the bloodstream when a heart attack occurs
Term
vascular
Definition
adjectival form of vessel
Term
vasoconstriction
Definition
narrowing of the b lood vessels
Term
vasodilation
Definition
widening of the blood vessels
Term
veins
Definition
the blood vessels that return blood from the tissues to the heart
Term
venous
Definition
adjectival form of vein
Term
venules
Definition
small veins
Term
ventricle
Definition
lower two of the four heart chambers, composed of the right ventricle and left ventricle
Term
white blood cells
Definition
formed element in the blood that protects the body against harmful bacteria
Term
anemia
Definition
abnormally low red blood cell count
Term
aneurysm
Definition
a localized dilation of an artery, cardiac chamber, or other vessel
Term
angina pectoris
Definition
pain in the chest due to ischemia
Term
angiospasm
Definition
spasm in blood vessels
Term
angiostenosis
Definition
narrowing of a blood vessel
Term
arrhythmia
Definition
abnormal rhythm; irregular heartbeat
Term
arteriosclerosis
Definition
hardening of the arteries
Term
arteriospasm
Definition
spasm of an artery
Term
arteriostenosis
Definition
narrowing of an artery
Term
arteritis
Definition
inflammation of an artery or arteries
Term
atheroma
Definition
fatty deposit or plaque within the arterial wall
Term
atherosclerosis
Definition
hardening and narrowing of the arteries
Term
atrial fibrilation
Definition
rapid, random, ineffective contractions of the atrium
Term
atriomegaly
Definition
enlargement of an atrium
Term
bradycardia
Definition
abnormally slow heartrate
Term
cardiac arrest
Definition
cessation of heart activity
Term
cardiodynia
Definition
heart pain
Term
cardiomalacia
Definition
softening of the heart
Term
cardiomegaly
Definition
enlargement of the heart
Term
cardiomyopathy
Definition
disease of the heart muscle (myocardium)
Term
cardiopathy
Definition
any heart disease
Term
cardiorrhexis
Definition
rupture of the wall of the heart
Term
carditis
Definition
inflammation of the heart
Term
congestive heart failure
Definition
syndrome where the heart is unable to pump enough blood to meet the body's needs for oxygen and nutrients; as a result, fluid is retained and accumulates in the ankles and legs
Term
disseminated intravascular coagulagion (DIC)
Definition
widespread clotting in the blood vessels causing obstruction to the tissues
Term
dyscrasia
Definition
general term for a blood disorder
Term
endocarditis
Definition
inflammation of the endocardium
Term
hemolysis
Definition
change or destruction of red blood cells
Term
hemophilia
Definition
congenital disorder affecting the coagulation process
Term
hemorrhage
Definition
discharge of blood
Term
hyperlipidemia
Definition
elevated cholesterol, triglycerides, and lipoproteins in the blood
Term
hypertension
Definition
elevated blood pressure (greater than 140/90)
Term
ischemia
Definition
deficiency in blood supply to the tissues
Term
myocardial infarction
Definition
heart attack
Term
myocarditis
Definition
inflammation of the heart muscle
Term
pericarditis
Definition
inflammation of the pericardium
Term
tachycardia
Definition
abnormally rapid heartbeat
Term
thrombocytopenia
Definition
abnormal decrease in the number of thrombocytes or platelets
Term
thrombus
Definition
blood clot attached to an interior wall of a vein or artery
Term
valvulitis
Definition
inflammation of a heart valve
Term
vasculitis
Definition
inflammation of a vessel
Term
vasoconstriction
Definition
narrowing of the arteries
Term
vasodilation
Definition
the widening of the arteries
Term
ablation
Definition
partial destruction of the pathway of the electrical conduction system of the heart to treat irregular heart rhythms
Term
angiogram
Definition
printed record obtained through angiography
Term
angiography
Definition
radiography of a blood vessel after injection of a contrast medium
Term
antianginals
Definition
drugs used to treat chest pain
Term
antiarrhythmics
Definition
drug used to treat rhythm abnormalities
Term
cardiac catheterization
Definition
procedure where a catheter is inserted into an artery and guided into the heart; may be used for diagnosis of blockages or treatment
Term
cardiac glycosides
Definition
drugs used to improve heart output by increasing the muscular contractions
Term
cardiogram
Definition
a graphic trace of electrical activity of the heart
Term
cardioversion
Definition
use of electical shock to restore the heart's normal rhythm
Term
diuretic
Definition
a drug used to increse urine production or urination
Term
echocardiography
Definition
ultrasonic procedure used to evaluate the structure and motion of the heart
Term
nuclear stress test
Definition
assessment of blood flow through the heart through the use of a nuclear element injection while the patient exercises
Term
sphygmomanometer
Definition
instrument used to measure blood pressure
Term
statins
Definition
a type of cholesterol lowering drug
Term
stent
Definition
a device implanted into an artery to open and provide support to the arterial wall
Term
ventricular fibrilation
Definition
irregular contractions of the ventricles; may be fatal unless reversed
Term
cardiologist
Definition
heart specialist
Term
cardiology
Definition
medical specialty dealing with the heart
Term
hematologist
Definition
blood specialist
Term
hematology
Definition
medical specialty dealing with blood
Term
angioplasty
Definition
surgical repair of a blood vessel
Term
atrioseptoplasty
Definition
surgical repair of an atrial septum
Term
cardiotomy
Definition
incision into the hear or incision into the cardia of the stomach
Term
coronary artery bypass
Definition
through an open chest, a graft (piece of vein or oter heart artyer) is implanted on the heart to bypass the blockage
Term
endarterectomy
Definition
surgical removal of the lining of an artery
Term
pericardiotomy
Definition
incision into the pericardium
Term
valvoplasty
Definition
surgical repair of a heart valve
Term
valvotomy
Definition
surgical removal of a blocked heart valve (stenosis of a heart valve) by cutting into it
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