Muscle Physiology Lab Assignment Part I: Muscle Twitch Study the data for the three muscles in Tables 1A, 1B, and 1C (pgs. 210-212). 1. Make a scatter plot graph in Microsoft Excel® using Data Tables 1A, 1B, and 1C that show the twitch tension timelines of the eye, rectus femoris, and plantaris muscle fibers. For each muscle, connect the dots together in sequence. Refer to the section in the Introduction of this lab manual titled: “Computer Graphing Using Microsoft Excel®” for help with this process. (3 points) 2. Graph the rectus femoris muscle. Label the latent period, contraction phase and relaxation phase. (2 points) Part II: Muscle Fatigue Do the procedure on page 220 of the lab manual. Plot a graph for the total time it took for fatigue to set in for each trial (see #12 on p. 220). (2 points) Part III: Isometric and Isotonic Contractions After following the procedure on page 222, recreate the following chart for your results using excel: (3 points) Data Table 6: Isometric and Isotonic Contractions Trial 1 Trial 2 Trial 3 Tension Length Type of Contraction
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