Cardiac
Skeletal
More T tubules, less
regular arrangement
Innervated by
Long fibres
motor end plate
Limited
Oval
Voluntary
regeneration
nucleus
Branched
Shorter fibres
Striated
troponin
Z disks
Actin and
myosin and
filaments
Intercalated discs
and gap junctions
Not fatigable
No regeneration
Myogenic
Not voluntary
Innervated by
autonomic
nerves
3 types of
fibres
Multinucleate,
peripheral
nucleus
Neuromuscular
junctions
Fatigues No junctions
Ca2+ involved
in contraction
quickly
Contracts
quickly
Fibres not
branched
Single nucleus,
central
No z disks Gap junctions
Contracts very
slowly
Two muscle
layers
Found in gut,
bronchioles
Circular and
longitudinal
Calmodulin,
not troponin
High regeneration
No T-tubules, less SR
Elongated nucleus
Smooth