EC6001 ME 2marks-16marks, MEDIMEL ELECTRONICS Question Bank, ME Short Answers – ECE 6th SEM Anna University

5. What is meant by sodium pump?Sodium pump is an active process in which sodium ions are quickly transported to the outside of the cell and the cell again becomes polarized and assumes its resting potential.
6. State all or none law in respect of cell bio potential. Apr/May 2008Regardless of the method by which a cell is excited or the intensity of the stimulus, the action potential is always the same for any given cell.
7. List the types of bioelectric potentials.Bio electric potential related to Heart, Brain, Muscle, Eye (Retina), Eye (Cornea – Retina)

• –  ElectroCardioGram (ECG)
• –  ElectroEncephaloGram (EEG)
• –  ElectroMyoGram (EMG)
• –  ElectroRetinoGram (ERG)
• –  ElectroOculoGram (EOG)

8. Define electrode and list its types.The device that convert ionic potential into electronic potential are called as electrode. The types of electrode are
   1. a)  Micro electrode
   2. b)  Depth and needle electrode
   3. c)  Surface electrode
9. What are perfectly polarized and perfectly non polarized electrodes?Electrodes in which no net transfer of charge occurs across the metal electrolyte interface is called perfectly polarized electrode.
   Electrodes in which unhindered exchange of charge occurs across the metal electrolyte interface is called perfectly non polarized electrode.

10. What are the types of electrodes used in bipolar measurement? May/June- 2012

1. a)  Limb electrodes
2. b)  Floating Electrodes
3. c)  Skin electrodes