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Muscle Physiology Lab Assignmentpage1image2566809856Study 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 showthe twitch tension timelines of the eye, rectus femoris, and plantaris muscle fibers. For eachmuscle, connect the dots together in sequence. Refer to the section in the Introduction ofthis 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 FatigueDo 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 ContractionsAfter following the procedure on page 222, recreate the following chart for your results using excel:Data Table 6: Isometric and Isotonic Contractions

Experiment MUSCLE PHYSIOLOGY PROCEDURE In this exercise, you will have the opportunity to create myograms in order to study three different muscles and contrast the latent period, contraction phase, and relaxation phase of each. Figures 4-6 identify each of the three muscles in the body, and Data Tables 1A-1C include data that will be used to create the myograms. Figure 4: Lateral rectus eye muscle (Patrick J. Lynch) Data Table 1A: Muscle twitch of the lateral rectus eye muscle Time Tension (milliseconds) (kilogram-force) 0 1 2 3 4 5 6 7 8 9 10 11 12 0 0 0 10 20 30 40 30 20 10 5 NO 2 www.LabPaq.com 210 ⒸHands-On Labs, Inc.

Experiment MUSCLE PHYSIOLOGY reche 23 Time (milliseconds) 0 3 6 9 12 15 18 -2 Figure 5: Anterior upper leg muscles. The rectus femoris (2) is pictured. 4 Data Table 1B: Muscle twitch of the rectus femoris muscle Tension (kilogram-force) 0 10 20 30 35 40 35 Item 1 2 3 4 www.LabPaq.com 211 Time (milliseconds) Description Sartorius Rectus femoris Vastus lateralis Vastus medialis 21 24 27 30 33 36 39 Tension (kilogram-force) 30 25 22 15 12 5 0 ⒸHands-On Labs, Inc.

Data Table 6: Isometric and Isotonic Contractions Tension Length Type of Contraction Trial 1 Trial 2 Trial 3