Cardiac and Smooth Muscle
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Last updated 10:20 PM on 3/29/26
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5 Terms
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cardiocytes
totally dependent on aerobic metabolism; connected by intercalated discs
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intercalated discs
rapidly transmits action potentials
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automaticity
allows pacemaker cells to establish resting heart rate on their own
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action potentials in cardiac muscle has:
longer duration; slow calcium channels that delay repolarization; long refractory periods
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smooth muscle cells
no T tubules, SR forms a loose network, no sarcomeres, thin filaments attach to dense bodies, no tendons
