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Med108 Angelica.V
42 Cardiovascular & Nervous System Word Roots
63
Medical
Undergraduate 1
09/24/2026
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Term
angi/o
 Definition
Blood vessel
Term
aort/o
 Definition
aorta (main artery)
Term
arteri/o
 Definition
artery
Term
arteriol/o
 Definition
arteriole (small artery)
Term
arther/o
 Definition
tatty plaque
Term
atri/o
 Definition
atrium (upper heart chamber)
Term
card/i, cardi/o
 Definition
Heart
Term
coron/o
 Definition
Heart, crown, or circle
Term
ech/o
 Definition
Reflected sound
Term
electr/o
 Definition
Electricity
Term
hem/o, hemat/o
 Definition
Blood
Term
isch/o
 Definition
Deficiency, blockage, or holding back
Term
phleb/o
 Definition
Vein
Term
sphygm/o
 Definition
Pulse
Term
steth/o
 Definition
Chest
Term
thromb/o
 Definition
Blood clot
Term
valv/o, valvul/o
 Definition
Valve
Term
vas/o, vasc/o
 Definition
Vessel or vas deferens
Term
ven/o
 Definition
Vein
Term
ventricul/o
 Definition
Ventricle (lower heart chamber)
Term
atel/o
 Definition
Incomplete or imperfect
Term
caus/o
 Definition
Burn or burning
Term
cephal/o
 Definition
Head
Term
cerebell/o
 Definition
Cerebellum (rear part of the brain)
Term
cerebr/o
 Definition
Cerebrum (largest part of the brain)
Term
clon/o
 Definition
Rapid muscle spasm or violent movement
Term
comat/o
 Definition
Deep sleep
Term
crani/o
 Definition
Skull
Term
dur/o
 Definition
Dura mater (outer brain membrane)
Term
encephal/o
 Definition
Brain
Term
gli/o
 Definition
Glial cells or glue (nervous system connective tissue)
Term
kinesi/o
 Definition
Movement
Term
lept/o
 Definition
Thin, slender, or delicate
Term
mening/o, meningi/o
 Definition
Meninges (protective membranes around cord)
Term
myel/o
 Definition
Spinal cord or bone marrow
Term
narc/o
 Definition
Stupor, numbness, or sleep
Term
neur/o, nerv/o
 Definition
Nerve
Term
poli/o
 Definition
Gray matter (of the spinal cord or brain)
Term
pont/o
 Definition
Pons (bridge structure in the brainstem)
Term
radicul/o
 Definition
Nerve root
Term
spin/o
 Definition
Spine or spinal cord
Term
syncop/o
 Definition
Fainting or cutting off
Term
a-, an-
 Definition
Without, not or lacking
Term
brady-
 Definition
Slow
Term
dys-
 Definition
Bad, difficult, or painful
Term
hemi-
 Definition
Half or one side
Term
hyper-
 Definition
Above, excessive, or high
Term
hypo-
 Definition
Below, deficient, or low
Term
inter-
 Definition
Between
Term
intra-
 Definition
Within or inside
Term
pan-
 Definition
All or total
Term
para-
 Definition
Abnormal
Term
peri-
 Definition
Around or near
Term
poly-
 Definition
Many or excessive
Term
post-
 Definition
After or following
Term
pre-
 Definition
Before or in front of
Term
sub-
 Definition
Under or beneath
Term
tachy-
 Definition
Fast or rapid
Term
bi-
 Definition
Two or double
Term
tri-
 Definition
Three
Term
tetra-
 Definition
Four
Term
hemi-
 Definition
Half
Term
epi-
 Definition
On, upon or above
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