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Cardiovascular and Nervous System Medical Terminology
prefixes suffix, root, abbreviations
102
Medical
Undergraduate 1
10/22/2025

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Term
brady-
Definition
Slow
Term
endo-
Definition
Inside, within
Term
epi-
Definition
Excessive, above normal
Term
hypo-
Definition
under or below
Term
peri-
Definition
Around
Term
tachy-
Definition
Fast
Term
a-
Definition
Without
Term
an-
Definition
Without, not
Term
dys-
Definition
Difficult, painful, abnormal
Term
hemi-
Definition
Half
Term
hyper-
Definition
Excessive, above normal
Term
in-
Definition
Not, inward
Term
inter-
Definition
Between
Term
intra-
Definition
Within, inside
Term
pan-
Definition
All, entire
Term
para-
Definition
Beside, abnormal
Term
poly-
Definition
Many
Term
post-
Definition
After
Term
pre-
Definition
Before
Term
sub-
Definition
Under, below
Term
-crasia
Definition
A mixture or blending (often used in relation to blood)
Term
-emia
Definition
Blood condition
Term
-ectomy
Definition
Surgical removal
Term
-graphy
Definition
Process of recording
Term
-itis
Definition
Inflammation
Term
-lysis
Definition
Destruction, breakdown
Term
-megaly
Definition
Enlargement
Term
-osis
Definition
Abnormal condition
Term
-penia
Definition
Deficiency
Term
-plasty
Definition
Surgical repair
Term
-rrhage
Definition
Bursting forth, excessive flow
Term
-stasis
Definition
Stopping, controlling
Term
-cytosis
Definition
Condition of cells
Term
arteri/o
Definition
Artery
Term
ather/o
Definition
Fatty plaque
Term
capillar/o
Definition
Capillaries (the smallest blood vessels)
Term
cardi/o
Definition
Heart
Term
chrom/o, chromat/o
Definition
Color
Term
erythr/o
Definition
Red
Term
hem/o, hemat/o
Definition
Blood
Term
isch/o
Definition
Restriction, deficiency
Term
leuk/o
Definition
White
Term
my/o
Definition
Muscle
Term
phleb/o
Definition
Vein
Term
scler/o
Definition
Hardening
Term
sten/o
Definition
Narrowing
Term
thromb/o
Definition
Clot
Term
valvul/o
Definition
Valve
Term
vas/o
Definition
Vessel
Term
ven/o
Definition
Vein
Term
alges/o
Definition
Sensitivity to pain
Term
cephal/o
Definition
Head
Term
cerebr/o
Definition
Brain, cerebrum
Term
cerebell/o
Definition
Cerebellum (part of the brain)
Term
concuss/o
Definition
To shake violently
Term
crani/o
Definition
Skull
Term
dur/o
Definition
Dura mater (outermost layer of the meninges)
Term
encephal/o
Definition
Brain
Term
esthesi/o
Definition
Sensation, feeling
Term
gangli/o, ganglion/o
Definition
Ganglion (a cluster of nerve cell bodies)
Term
hydr/o
Definition
Water, fluid
Term
lob/o
Definition
Lobe
Term
ment/o
Definition
Mind, chin
Term
mening/o, meningi/o
Definition
Meninges (membranes covering the brain and spinal cord)
Term
mon/o
Definition
One, single
Term
myel/o
Definition
Spinal cord, bone marrow
Term
neur/o, neur/i
Definition
Nerve
Term
phas/o
Definition
Speech
Term
poli/o
Definition
Gray matter (of the brain or spinal cord)
Term
pont/o
Definition
Pons (a part of the brainstem)
Term
psych/o
Definition
Mind
Term
radic/o, radicul/o, rhiz/o
Definition
Nerve root
Term
vag/o
Definition
Vagus nerve (a cranial nerve)
Term
A-fib (Atrial Fibrillation)
Definition
irregular and often rapid heart rate that can lead to poor blood flow.
Term
AED (Automated External Defibrillator)
Definition
portable device that can detect life-threatening cardiac arrhythmias an
Term
CABG (Coronary Artery Bypass Graft)
Definition
surgical procedure that improves blood flow to the heart
Term
CAD (Coronary Artery Disease)
Definition
narrowing or blockage of the coronary arteries
Term
Card cath, CC (Cardiac Catheterization)
Definition
procedure used to diagnose and treat cardiovascular conditions by inserting a thin tube (catheter) into the heart
Term
CVI (Chronic Venous Insufficiency)
Definition
veins in the legs don’t allow blood to flow back properly to the heart,
Term
EKG, ECG (Electrocardiogram)
Definition
detect abnormalities in heart rhythm, structure, or function.
Term
HTN (Hypertension)
Definition
high blood pressure,
Term
ICD (Implantable Cardioverter Defibrillator)
Definition
device implanted in the chest or abdomen to monitor heart rhythm
Term
MI (Myocardial Infarction)
Definition
heart attack
Term
PAD (Peripheral Artery Disease)
Definition
narrowed arteries reduce blood flow to the limbs, commonly the legs.
Term
PVD (Peripheral Vascular Disease)
Definition
circulation disorder that affects blood vessels outside the heart and brain
Term
Tpa (Tissue Plasminogen Activator)
Definition
clot-dissolving medication
Term
TST (Treadmill Stress Test)
Definition
diagnostic test that involves walking on a treadmill while monitoring heart activity
Term
V-fib (Ventricular Fibrillation)
Definition
life-threatening arrhythmia in which the lower chambers of the heart (ventricles) quiver instead of pumping blood effectively, often leading to cardiac arrest.
Term
AD (Alzheimer's Disease)
Definition
progressive neurological disorder that leads to memory loss, cognitive decline, and behavioral changes.
Term
ALS (Amyotrophic Lateral Sclerosis)
Definition
Lou Gehrig's disease, is a progressive neurodegenerative disorder that affects nerve cells in the brain and spinal cord, leading to muscle weakness, paralysis, and eventually respiratory failure.
Term
ADHD (Attention-Deficit/Hyperactivity Disorder)
Definition
neurodevelopmental disorder characterized by persistent patterns of inattention, hyperactivity, and impulsiveness
Term
CP (Cerebral Palsy)
Definition
group of disorders that affect movement, muscle tone, or posture, caused by damage to the developing brain, typically before or at birth.
Term
CSF (Cerebrospinal Fluid)
Definition
clear fluid that surrounds and protects the brain and spinal cord, providing cushioning and acting as a medium for nutrient and waste exchange.
Term
EEG (Electroencephalogram)
Definition
diagnostic test that records electrical activity in the brain using electrodes placed on the scalp
Term
ICP (Intracranial Pressure)
Definition
pressure inside the skull and brain.
Term
LOC (Level of Consciousness)
Definition
a person's state of awareness,
Term
LP (Lumbar Puncture)
Definition
spinal tap,
Term
MS (Multiple Sclerosis)
Definition
chronic autoimmune disease that affects the central nervous system,
Term
OCD (Obsessive-Compulsive Disorder)
Definition
mental health disorder characterized by recurring, unwanted thoughts (obsessions) and repetitive behaviors (compulsions) that a person feels driven to perform to reduce anxiety.
Term
PTSD (Post-Traumatic Stress Disorder)
Definition
PTSD (Post-Traumatic Stress Disorder)
Term
Sz (Seizure)
Definition
sudden, uncontrolled electrical disturbance in the brain that can cause changes in behavior, movements, feelings, or consciousness.
Term
TIA (Transient Ischemic Attack)
Definition
mini-stroke,
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