cardiac pacemaker
sinoatrial node
bangtail
cardiac muscle
electronic device
example
exemplar
good example
heart muscle
model
race horse
racehorse
acidulation
arrestor
battledress
catheterization
cochlear
decompensation
electroconvulsive
gating
intravesical
key-lock
mastoid
myocyte
patterning
preload
reinfection
rhythmicity
subdermal
subvocal
tamponade
unicycle