membrane potential difference

• what is meant by a neurone being a excitable cell


  it can change its resting potential
• what is meant by resting potential


  this is the potential difference across the membrane when no nerve impulses are being conducted
• what types of electrodes are used in axons to measure changes in electrical potential


  micro electrodes
• what device is used to read electrical potential

  cathode ray oscilloscope
• where are micro electrodes found


  in axons
• give an example of an animal used for its larger neurones


  giant squids
• what will be the the potential difference if both the microelectrodes are outside the neurone


  0mv
• what is meant by potential difference


  this is the difference between the inside and outside the axon
• what is the potential difference when one electrode is found in the axon and one is outside


  70mv