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
2. Graph the rectus femoris muscle. Label the latent period, contraction phase and relaxation phase.
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).
Part III: Isometric and Isotonic Contractions
After following the procedure on page 222, recreate the following chart for your results using excel:
Data Table 6: Isometric and Isotonic Contractions Trial 1 Trial 2 Trial 3 Tension Length Type of Contraction