From twitch to tetanus
Tension
Time
Stimuli
Latent
Contraction
Relaxation
Summation
Incomplete tetanus
Complete tetanus
1
One twitch
One stimulus: latent, contraction, relaxation
2
Summation
A second stimulus before relaxation adds on
3
Incomplete tetanus
Faster stimuli: twitches merge, small dips between
4
Complete tetanus
Very fast stimuli: a smooth plateau at the highest tension
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