Cards (5)

    • Procedure A
      1. Make two muscle-nerve preparations and keep them moist with NSS
      2. Place the nerve of specimen A on top of specimen B. Stimulate the nerve of specimen B with single induction shocks of moderate intensity. Note the effects on the muscles of both specimens
    • Preparation
      Define the following: Membrane potential, Action potential, Action current, Demarcation current
    • Experiment 8
      Action current; The rheoscopic preparation; Current of injury
    • Procedure B
      1. Make two muscle-nerve preparations and keep them moist with NSS
      2. Cut a portion of the muscle of preparation B so that it now presents an injured and an uninjured portion
      3. Place the nerve of preparation A on top of preparation B in such a way that the middle of the nerve rests on the injured surface while the end of the nerve rests on the uninjured surface. Note what happens
    • Report and Conclusion
      1. Action current: Resting membrane potential, Action potential, Depolarization, Repolarization
      2. Current of injury: Injured membrane, Electronegative damaged area, Demarcation potential, Depolarization but not repolarization
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