Texts: Myogram Myogram: visual/graphic representation of muscular contraction Phases: 1. Time of Stimulation: nervous impulse delivered Period: period of time before stimulus energy results in increased muscle tension (excitation-contraction coupling) 3. Naphase power stroke occurs In phase: calcium goes back into storage and muscle relaxes Refractory Period: period of time when stimulation (does/doesn't) bring about a response. Includes all of the Period: during period and all of the period of Absolute Refractory phase, there is no response to an additional stimulus. Relative Refractory Period: during phase (after contraction phase), if the additional stimulus is very strong you could potentially get a second/additional contraction Muscle Twitch

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