angi/o
blood vessel
aort/o
aorta
arteri/o
artery
ather/o
joint
atri/o
atrium
cardi/o
heart
ech/o
sound
electr/o
electrical activity
embol/o
plug
immun/o
immune system
isch/o
blockage
lymph/o
lymph
lymph/o and lymphaden/o
lymph node
myel/o
bone marrow
phleb/o
vein
plasm/o
plasma
splen/o
spleen
thromb/o
blood clot
thym/o
thymus gland
valvul/o
valve
ven/o
veins
ventricul/o
ventricle
embolism
state of a blood clot or plug
erthryocytopenia
abnormal reduction in RBC