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Medical Terminology Ch.10
Cardiovascular, Immune, Lymphatic Systems and Blood
220
Medical
Undergraduate 1
04/23/2012

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Term
Heart
Definition
muscular cone-shaped organ the size of a fist, located behind the sternum and between the lungs. Consists of two upper chambers(artria) and two lower chambers(ventricles). The atria receive blood returning from the body through the veins. The ventricles pump blood through the arteries from the heart back to the body tissue. The atrial septum separates the atria and the ventricular septum separates the ventricles.
Term
Tricuspid valve
Definition
Located between the right atrium and right ventricle.
Term
Mitral valve (bicuspid valve)
Definition
Located between the left atrium and left ventricle.
Term
Semilunar valves
Definition
pulmonary and aortic valves located between the right ventricle and the pulmonary artery and between the left ventricle and the aorta.
Term
pericardium
Definition
two layer sac consisting of an external fibrous and an internal serous layer. The serous layer secretes a fuid that facilitates movement of the heart. This layer also covers the heart and is called the epicardium.
Term
epicardium
Definition
covers the heart.
Term
myocardium
Definition
middle, thick muscular layer.
Term
endocardium
Definition
inner lining of the heart
Term
arteries
Definition
blood vessels that carry blood away from the heart.
Term
arterioles
Definition
smallest arteries
Term
aorta
Definition
largest artery in the body, originating at the left ventricle and descending through the thorax and abdomen.
Term
veins
Definition
blood vessels that carry blood back to the heart.
Term
venules
Definition
smallest veins.
Term
venae cavae
Definition
largest veins in the body. The inferior vena cava carries blood to the heart from the body vs. the superior vena cava returns the blood to the heart from the upper part of the body.
Term
capillaries
Definition
microscopic blood vessels that connect arterioles with venules.
Term
blood
Definition
composed of plasma and formed elements, such as erythrocytes, leukocytes and thrombocytes.
Term
plasma
Definition
clear, straw-colored, liquid portion of blood in which cells are suspended.
Term
erythrocytes
Definition
red blood cells that carry oxygen. Erythrocytes develop in bone marrow.
Term
leukocytes
Definition
white blood cells that combat infection and respond to inflammation. There are five types of white blood cells.
Term
platelets ( thrombocytes)
Definition
one of the formed elements in the blood that is responsible for aiding in the clotting process.
Term
serum
Definition
clear, watery fluid portion of the blood that remains after a clot has formed.
Term
Lymphatic system
Definition
Three functions of the lymphatic system are to return excessive tissue fluid to the blood, absorb fats and fat-soluble vitamins from the small intestine and transport them to the blood, and provide defense against infection.
Term
lymph
Definition
transparent, colorless, tissue fluid that, on entering the lymphatic systm, is called lymph. Lymph contains lymphocytes and monocytes and flows in a one-way direction to the heart. Lymph is similar to blood plasma.
Term
lymphatic vessels
Definition
similar to veins, lymphatic vessels transport lymph from body tissues to the chest, where it enters the cardiovascular system. They provide a one-way flow for lymph gathered from the tissues to ducts in the chest, where lymph enters through veins into the circulatory system.
Term
lymph nodes
Definition
small, spherical bodies composed of lymphoid tissue. They may be singular or grouped together along the path of the lymph vessels. The nodes filter lymph to keep substances from entering the blood - also produce lymphocytes.
Term
spleen
Definition
located in the left side of the abdominal cavity between the stomach and the diaphragm. Blood is cleansed of microorganisms in the spleen..
Term
thymus gland
Definition
one of the primary lymphatic organs, located anterior to the ascending aorta and posterior to the sternum between the lungs. It plays an important role in the development of the body's immune system.
Term
angi/o
Definition
blood vessel
Term
aort/o
Definition
aorta
Term
arteri/o
Definition
artery
Term
atri/o
Definition
atrium
Term
cardi/o
Definition
heart
Term
lymphaden/o
Definition
lymph node
Term
lymph/o
Definition
lymph, lymph tissue
Term
myel/o
Definition
bone marrow (* myel/o also means spinal cord)
Term
phleb/o, ven/o
Definition
vein
Term
plasm/o
Definition
plasma
Term
splen/o
Definition
spleen
Term
thym/o
Definition
thymus gland
Term
valv/o, valvul/o
Definition
valve
Term
ventricul/o
Definition
ventricle
Term
ather/o
Definition
yellowish, fatty plaque
Term
ech/o
Definition
sound
Term
electr/o
Definition
electricity, electrical activity
Term
isch/o
Definition
deficiency, blockage
Term
therm/o
Definition
heat
Term
thromb/o
Definition
clot
Term
brady-
Definition
slow
Term
-ac
Definition
pertaining to
Term
-apheresis
Definition
removal
Term
-graph
Definition
instrument used to record; record
Term
-odynia
Definition
pain
Term
-penia
Definition
abnormal reduction in number
Term
-poiesis
Definition
formation
Term
-sclerosis
Definition
hardening
Term
angioma
Definition
tumor composed of blood vessels
Term
angiostenosis
Definition
narrowing of a blood vessel
Term
aortic stenosis
Definition
narrowing pertaining to aorta
Term
arteriosclerosis
Definition
hardening of the arteries
Term
atherosclerosis
Definition
hardening of fatty plaque. ( deposited on the arterial wall)
Term
bradycardia
Definition
condition of a slow heart
Term
cardiodynia
Definition
pain in the heart
Term
cardiomegaly
Definition
englargement of the heart
Term
cardiomyopathy
Definition
disease of the heart muscle
Term
cardiovalvulitis
Definition
inflammation of the valves of the heart, ( aka: valvulitis)
Term
endocarditis
Definition
inflammation of the inner lining of the heart ( particularly heart valves)
Term
ischemia
Definition
defciency of blood flow
Term
myocarditis
Definition
inflammation of the muscle of the heart
Term
pericarditis
Definition
inflammation of the sac surrounding the heart
Term
phlebitis
Definition
inflammation of a vein
Term
polyarteritis
Definition
inflammation of many sites in the arteries
Term
tachycardia
Definition
abnormal state of rapid heart rate, >100
Term
thrombophlebitis
Definition
inflammation of a vein associated with a clot
Term
hematoma
Definition
tumor of blood (collection of blood resulting from a broken blood vessel)
Term
multiple myeloma
Definition
tumors of the bone marrow
Term
pancytopenia
Definition
abnormal reduction of all blood cells
Term
thrombosis
Definition
abnormal condition of a blood clot
Term
thrombus
Definition
blood clot ( attached to the interior wall of an artery or vein)
Term
lymphadenitis
Definition
inflammation of the lymph nodes
Term
lymphadenopathy
Definition
disease of the lymph nodes(characterized by abnormal enlargement of the lymph nodes associated with an infection or malignancy)
Term
lymphoma
Definition
tumor of the lymphatic tissue (malignant)
Term
splenomegaly
Definition
enlargement of the spleen
Term
thymoma
Definition
tumor of the thymus gland
Term
acute coronary syndrome (ACS)
Definition
sudden symptoms of insufficient blood supply to the heart indicating unstable angina or acute myocardia infarction. (ACS)
Term
aneurysm
Definition
ballooning of a weakened portion of an arterial wall
Term
angina pectoris
Definition
chest pain, which may radiate to the left arm and jaw, that occurs when there is an insufficient supply of blood to the heart
Term
arrhythmia
Definition
any disturbance or abnormality in the hearts normal rhythmic pattern
Term
atrial fibrillation (AFib)
Definition
a cardiac arrhythmia characterized by chaotic, rapid electrical impulses in the atria. The atria quiver instead of contracting, causing irregular ventricular response and the ejection of a reduced amount of blood. The blood that remains in the atria becomes static, increasing the risk of clot formation, which may lead to a stroke. Paroxysmal atrial fibrillation(PAF)= intermittent, and chronic atrial fibrillation is sustained.
Term
cardiac arrest
Definition
sudden cessation of the cardiac output and effective circulation, which requires cardiopulmonary resuscitation (CPR)
Term
cardiac tamponade
Definition
acute compression of the heart caused by fluid accumulation in the pericardial cavity.
Term
coarctation of the aorta
Definition
congenital cardiac condition characterized by a narrowing of the aorta
Term
congenital heart disease
Definition
heart abnormality present at birth
Term
congestive heart failure(CHF)
Definition
inability of the heart to pump enough blood through the body to supply the tissues and organs with nutrients and oxygen.
Term
coronary artery disease (CAD)
Definition
a condition that reduces the flow of blood through the coronary arteries to the myocardium, denying the myocardial tissue of sufficient oxygen to function fully; most often caused by coronary atheroscleoris (aka heart failure HF)
Term
coronary occulsion
Definition
obstruction of an artery of the heart, usually from atherosclerosis. Coronary occulsion can lead to acute myocardial infarction.
Term
deep vein thrombosis (DVT)
Definition
condition of thrombus in a deep vein of the body. Most often occurs in the lower extremities. A clot can break off and travel to the lungs, causing a pulmonary embolism.
Term
hypertensive heart disease (HHD)
Definition
disorder of the heart brought about by persistent high blo0d pressure
Term
intermittent claudication
Definition
pain and discomfort in calf muscles while walking; condition seen in occlusive artery disease
Term
mitral valve stenosis
Definition
a narrowing of the mitral valve from scarring, usually caused by episodes of rheumatic fever
Term
myocardial infarction(MI)
Definition
death (necrosis) of a portion of the myocardium caused by lack of oxygen resulting from an interrupted blood supply (aka heart attack)
Term
peripheral aterial disease (PAD)
Definition
disease of the arteries, other than those of the heart and brain, that affects blood circulation, such as atherosclorsis and Raynaud disease. Common symptom is intermittent claudication.
Term
rheumatic heart disease
Definition
damage to the heart muscle or heart valves caused by one or more episodes of rheumatic fever
Term
varicose veins
Definition
distended or tortuous veins usually found in the lower extremities
Term
anemia
Definition
reduction in the amount of hemoglobin in the red blood cells
Term
embolus
Definition
blood clot or foreign material, such as air or fat, that enters the bloodstream and moves until it lodges at another point in the circulation.
Term
hemophilia
Definition
inherited bleeding disease most commonly caused by deficiency of the coagulation factor VII
Term
leukemia
Definition
malignant disease characterized by essesive increase in abnormal white blood cells formed in the bone marrow
Term
Hodgkin disease
Definition
malignant disorder of the lymphatic tissue characterized by progressive enlargement of the lymph nodes.
Term
infectious mononucleosis
Definition
an acute infections caused by the Epstein-Barr virus characterized by swollen lymph nodes, sore throat, fatigue, and fever. Common in young people and usually transmitted by salvia.
Term
angioplasty
Definition
surgical repair of a blood vessel
Term
atherectomy
Definition
excision of fatty plaque
Term
endartectomy
Definition
excision within the artery. This procedure is usually names for the artery to be cleaned out, such as carotid endarectomy, which means removal of plaque from the wall of the carotid artery.
Term
pericardiocentesis
Definition
surgical puncture to aspirate fuid from the outer layer. used to treat cardiac tamponade
Term
phelbectomy
Definition
excision of a vein
Term
phlebotomy
Definition
incision into a vein ( aka venipuncture)
Term
valvuloplasty
Definition
surgical repair of a val (cardiac or venous)
Term
splenectomy
Definition
excision of the spleen
Term
splenopexy
Definition
surgical fixation of the spleen
Term
thymectomy
Definition
excision of the thymus gland.
Term
aneurysmectomy
Definition
surgical excision of an aneurysm
Term
atrial fibrillation ablation
Definition
a procedure in which abnormal cells that trigger atrial fibrillation are destroyed by using radiofrequency energy.
Term
cardiac pacemaker
Definition
battery-powered apparatus implanted under the skin with leads placed on the heart or the chamber of the heart.
Term
coronary artery bypass graft (CABG)
Definition
surgical technique to bring a new blood supply to heart muscle by detouring around blocked arteries.
Term
coronary stent
Definition
a supportive scaffold device implanted in the coronary artery; used to prevent closure of the artery after angioplasty or atherectomy
Term
embolectomy
Definition
surgical removal of an embolus or clot ( usually with a balloon catheter, inflating the balloon beyond the clot, then pulling the balloon back to the incision and bringing the clot with it)
Term
femoropopliteal bypass
Definition
surgery to establish an alternate route from femoral artery to popliteal artery to bypass an obstruction
Term
implantable cardiac defibrillator (ICD)
Definition
a device implanted in the body that conintuously monitors the heart rhythm. If life-threatening arrhythmias occur, the device delivers an electric shock to convert the arrhythmia back to a normal rhythm.
Term
intracoronary thrombolytic therapy
Definition
an injection of an intravenous medication to dissolve blood clots in the coronary vessel
Term
percutaneous transluminal coronary angioplasty (PTCA)
Definition
procedure in which a balloon is passed through a blood vessel into a coronary artery to the area where plaque is formed. Inflation of the balloon compressess the plaque against the vessel wall, expanding the inner diameter of the blood vessel, allowing blood to circulate more freely. (aka balloon angioplasty)
Term
bone marrow aspiration
Definition
a syringe is used to aspirate a sample of the liquid portion of the bone marrow, usually from the ilium, for study; used to diagnose, stage, and monitor disease and condition of the blood cells.
Term
bone marrow biposy
Definition
a needle puncture to obtain a sample of bone marrow, usually from the ilium, for study; used to diagnose , stage and monitor disease and condition of the blood cells
Term
bone marrow transplant
Definition
infusion of normal bone marrow cells from a donor with matching cells and tissue to a recipient with a certain type of leukemia or anemia.
Term
angiography
Definition
radiographic imaging of blood vessels (femoral angiography)
Term
angioscope
Definition
instrument used for visual examination of a blood vessel
Term
angioscopy
Definition
visual examination of a blood vessel
Term
aotogram
Definition
radiographic image of the aorta
Term
arteriogram
Definition
radiographic image of an artery(injection of contrast media)
Term
venogram
Definition
radiographic image of a vein (injection of contrast media)
Term
venography
Definition
radiographic imaging of a vein (injection of contrast media)
Term
echocardiogram (ECHO)
Definition
record of the heart (structure and motion) using sound (used to detect valvular disease and evaluate heart function)
Term
electrocardiogram (ECG, EKG)
Definition
record of the electrical activity of the heart
Term
electrocardiograph
Definition
instrument used to record the electrical activity of the heart
Term
electrocardiography
Definition
process of recording the electrical activity of the heart
Term
digital subtraction angiography (DSA)
Definition
a process of digital radiographic imaging of the blood vessels that "subtracts" or removes structures not being studied
Term
Doppler ultrasound
Definition
a study that uses sound for detection of blood flow within the vessels; used to assess intermittent claudication, deep vein thrombosis, and other blood flow abnormalities
Term
exercise stress test
Definition
a study that evaluates cardiac function during physical stress by riding bike or walking treadmill. ECHO, EKG, and nuclear medicine scanning are three types of tests performed to measure cardiac function.
Term
single-photon emission computed tomography (SPECT)
Definition
a nuclear medicine scan that visualizes the heart from several different angles. A tracer substance such as sestamibi or thallium is injected intravenously. the SPECT scanner creates images from the tracer absorbed by the body tissues. It is used to assess damage to cardiac tissue.
Term
thallium test
Definition
a nuclear medicine test used to diagnose coronary artery disease and assess revasularization after coronary artery bypass surgery. Thallium. a radioactive isotope, is injected into the body intravenously; a radiation detector is placed of the heart and images are recorded.
Term
transesophageal echocardiogram (TEE)
Definition
an ultrasound test that examines cardiac function and structure by using an ultrasound probe placed in the esophagus, which provides views of the heart structures.
Term
cardiac catheterization
Definition
an examination to determine the condition of the heart and surrounding blood vessels. A catheter is passed into the heart through a blood vessel and is used to record pressures and inject a contrast medium, allowing visualization of the coronary arteries, great vessels and the heart chambers.
Term
impedance plethysmography (IPG)
Definition
measures venous flow of the extremities with a plethysmograph to detect clots by measuring changes in blood volume and resistance in the vein; used to detect deep vein thrombosis.
Term
auscultation
Definition
hearing sounds within the body through a stethoscope
Term
blood pressure (BP)
Definition
pressure exerted by the blood against the blood vessel walls. BP measurment written as systolic pressure (120) and diastolic pressure (80) is commonly recorded as 120/80.
Term
percussion
Definition
tapping of a body surface with the fingers to determine the density of the part beneath
Term
pulse
Definition
the number of times per minute the heartbeat is felt on the arterial wall.
Term
sphygomomanometer
Definition
device used for measuring blood pressure
Term
stethoscope
Definition
an instrument used to hear internal body sounds.
Term
C-reactive protein (CRP)
Definition
a blood test to measure the amount of C-reactive protein in the blood; when elevated indicates inflammation in the body.
Term
creatine phosphokinase (CPK)
Definition
a blood test used to measure the level of creatine phosphokinase, an enzyme of heart and skeletal muscle released into the blood after muscle injury or necrosis.
Term
homocysteine
Definition
a blood test used to measure the amount of homocysteine in the blood. Homocysteine is an amino acid that, if elevated, may indicate an increased risk of cardiovascular disease.
Term
lipid profile
Definition
blood test used to measure the amount of lipids in a sample of blood. Used to evaluate the risk of developing cardiovascular disease. Measures HDL, LDL, VLDL and triglycerides.
Term
troponin
Definition
blood test measures troponin, a heart muscle enzyme. Troponins are released into the blood approximately 3 hours after necrosis of the heart muscle and may remain elevated from 7-10days. Diagnose myocardial infarction.
Term
coagulation time
Definition
blood test to determine the time it takes for blood to form a clot.
Term
complete blood count (CBC) and differential count (Diff)
Definition
basic blood screening that measures hemoglobin, hematocrit, red blood cell number and morphology, leukocyte count, and white blood cell differential and platelet count.
Term
hematocrit (HCT)
Definition
blood test to measure the volume and number of red blood cells. diagnosis of anemic pts.
Term
hemoglobin (Hgb)
Definition
blood test used to determine the concentration of oxygen-carrying components (hemoglobin) in red blood cells.
Term
prothrombin time (PT)
Definition
blood test used to determine certain coagulation activity defects and to monitor anticoagulation therapy for patients taking Coumadin. (oral anticoagulant medication)
Term
atrioventricular (AV)
Definition
pertaining to the atrium and ventricle
Term
cardiac
Definition
pertaining to the heart
Term
cardiogenic
Definition
originating in the heart
Term
cardiologist
Definition
physician who studies and treats diseases of the heart
Term
cardiology
Definition
the study of the heart
Term
hypothermia
Definition
condition of body temperature that is below normal.
Term
intravenous (IV)
Definition
pertaining to within the veins
Term
phlebologist
Definition
physician who studies and treats diseases of the veins
Term
phlebology
Definition
the study of veins
Term
hematologist
Definition
physician who studies and treats diseases of the blood
Term
hematology
Definition
study of the blood
Term
hematopoiesis
Definition
formation of blood cells
Term
hemolysis
Definition
dissolution of red blood cells
Term
hemostasis
Definition
stoppage of bleeding
Term
myelopoiesis
Definition
formation of bone marrow
Term
plasmapheresis
Definition
removal of plasma from withdrawn blood
Term
thrombolysis
Definition
dissolution of a clot
Term
cardiopulmonary resuscitation (CPR)
Definition
emergency procedure consisting of artificial ventilation and external cardiac massage.
Term
defibrillation
Definition
application of an electric shock to the myocardium through the chest wall to restore normal cardiac rhythm
Term
diastole
Definition
phase in the cardiac cycle in which the ventricles relax between contractions
Term
extracorporeal
Definition
occurring outside the body.
Term
extravasation
Definition
escape of blood from the blood vessel into the tissue
Term
fibrillation
Definition
rapid, quivering, noncoordinated contractions of the atria and ventricles
Term
heart murmur
Definition
a short duration humming sound of cardiac or vascular origin
Term
hypercholersterolemia
Definition
excessive amount of cholesterol in the blood; associated with heightened risk of cardiovascular disease
Term
hyperlipidemia
Definition
excessive amounts of fats in the blood (triglycerides and cholesterol)
Term
hypertension
Definition
blood pressure that is above normal (>140/90)
Term
hypertriglyceridemia
Definition
excessive amount of triglycerides in the blood; associated with an increased risk of cardiovascular disease
Term
hypotension
Definition
blood pressure that is blow normal (<90/60)
Term
lipids
Definition
fats and fatlike substances that serve as a source of fuel in the body.
Term
lumen
Definition
space within a tubular part or organ.(space within a blood vessel)
Term
occlude
Definition
to close tightly, to block
Term
systole
Definition
phase in the cardiac cycle in which the ventricles contract.
Term
vasoconstrictor
Definition
agent or nerve that narrows the blood vessels
Term
vasodilator
Definition
agent or nerve that enlarges the blood vessels
Term
venipuncture
Definition
puncture of a vein to remove blood, instill a medication, or start an intravenous infusion
Term
anticoagulant
Definition
agent that slows the clotting process
Term
dyscrasia
Definition
abnormal or pathologic condition of the blood
Term
hemorrhage
Definition
rapid loss of blood, as in bleeding
Term
allergen
Definition
an environmental substance capable of producing an immediate hypersensitivity in the body.
Term
allergist
Definition
a physician who studies and treats allergic conditions
Term
anaphylaxis
Definition
an exaggerated, life-threatening reaction to a previously encountered antigen such as bee venom, peanuts, or latex.
Term
antibiotic
Definition
a drug that targets microorganisms to kill or halt growth or replication
Term
antibodies
Definition
a substance produced by lymphocytes that inactivates or destroys antigens
Term
antigen
Definition
a substance that triggers an immune response when introduced into the body.
Term
autoimmune disease
Definition
a disease caused by the body's inability to distinguish its own cells from foreign bodies, thus producing antibodies that attack its own tissue.
Term
immune
Definition
being resistant to specific invading pathogens
Term
immunodeficiency
Definition
deficient immune response caused by the immune system dysfunction brought on by disease or immunosuppressive drugs.
Term
immunologist
Definition
a physician who studies and treats immune system disorders
Term
immunology
Definition
the branch of medicine dealing with immune system disorders
Term
infection
Definition
the invasion of pathogens in body tissue.
Term
phagocytosis
Definition
a process in which some of the white blood cells destroy the invading microorganism and old cells.
Term
vaccine
Definition
a suspension of inactivated microorganisms administered by injection, mouth or nasal spray to prevent infectious diseases by inducing immunity
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