Frog muscle lab report
What factors must be considered when choosing which muscles from a frog would be suitable for this study? Standardize the movement of the transducer 1.
Consult Chapter 9 of your Widmaier text and the Figures, and for more information. Near the end of the lab, be prepared to show examples of each phenomenon on your computer screen. Make sure computer and iWorx interface black box are unplugged 2.
Direct stimulation of frog gastrocnemius muscle
Your equipment is now ready for the experiment V. What will the units be? Describe what happens to muscle contraction when the load is increased. Define minimal threshold , subminimal, maximal, and supramaximal stimulus. Calculate the work that is done in a given muscle. What factors must be considered when choosing which muscles from a frog would be suitable for this study? How long must the recordings be in order to see twitches and summation? After the computer has booted up, click on theLabscribe icon 9.
Each muscle will be removed from the body for study. In which order should the experiments be completed? During this lab, each group students will be provided with a frog gastrocnemius muscle or a wrist extensor muscle, a PowerLab computer setup including a force transducer also known as a strain gaugeringstand, clamps, micromanipulators, dissecting tools, pin electrodes for stimulation, and 0.
Frog leg muscle experiment
Your equipment is now ready for the experiment V. How long does a muscle twitch last? Plug the iWorx power cord into the outlet 6. Make sure computer and iWorx interface black box are unplugged 2. Performance Objectives At the end of this exercise the student should be able to: 1. What can we do to ensure its longevity, at least for the duration of the lab period? Describe what happens to muscle contraction when the load is increased. If the system is already set up, skip to V. Frog Skeletal Muscle Lab I updated 23 Oct at am The objective of this exercise is for students to 1 determine the stimulus parameters necessary to demonstrate threshold, twitch, recruitment, multiple summation, incomplete tetanus, fused tetanus, fatigue, and the latent period, 2 gain practice with experimental design as a group effort, 3 become more experienced with the use of computers for data acquisition and analysis, 4 observe various types of muscle contractions, 5 compare the properties of muscles from various parts of the body, and 6 predict the fiber type composition of muscles from various part of the body.
The text on the pages associated with those figures will be helpful. Turn on the computer 8.
Skeletal muscle physiology lab
In which order should the experiments be completed? Turn on the computer 8. Why have we elected to study the wrist extensor and gastrocnemius? Indicate the proposed sequence by re-ordering the following terms: Fatigue. A spreadsheet with the experimental results from each of the groups in all labs will be available on the website on Friday. Draw a diagram of the setup used in this lab exercise. You will be instructed on the use and calibration of the force transducer. To facilitate this, add comments to the pages of computer data you record. Turn on the iWorx interface 7. Near the end of the lab, be prepared to show examples of each phenomenon on your computer screen.
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