What This Document Is
This is a lab report completed by a student, Merry Khadka, for BIO 201 Microbiology at Berkeley College. It details an experiment investigating muscle recruitment during different types of muscle contractions – isotonic (concentric and eccentric) and isometric – using surface electromyography (sEMG). The report includes predictions, materials and methods, results presented in tables and graphs, and answers to related questions. It was submitted on November 14, 2021.
Why This Document Matters
This report is intended for the instructor, Peter Le, as a demonstration of the student’s understanding of muscle physiology and their ability to collect and interpret experimental data. It serves as an assessment of practical skills in a microbiology lab setting, specifically relating to neuromuscular function.
Common Limitations or Challenges
This is a single student’s work and represents one interpretation of the experiment. It is not a comprehensive guide to sEMG or muscle physiology. It focuses specifically on the biceps brachii muscle and the experimental setup used in this lab.
What This Document Provides
The full report includes: a description of the experimental setup, the student’s initial predictions about muscle activation, detailed data tables showing amplitude and frequency of sEMG spikes under different conditions (rest, concentric, eccentric, isometric contractions at varying loads), graphical representations of the data, and the student’s answers to questions about their observations. This preview only provides a summary of the document’s purpose and content. It does *not* include the full data sets, graphs, or the student’s complete analysis.
