4 Quiz

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QUESTIONS

• 1. Neurons have membranes that are:
  • a.           semipermeable
  • b.           transducers
  • c.           permeable
  • d.           unipolar
• 2. Because chloride is stuck inside, a neuron’s resting potential is:
  • a.           reflective
  • b.           centered
  • c.           negative
  • d.           positive
• 3. When the sodium gate open, how much of the available sodium rushes in?
  • a.           1%
  • b.           20%
  • c.           50%
  • d.           99.9%
• 4. Novocain stops pain by blocking:
  • a.           potassium channels
  • b.           sodium channels
  • c.           zinc channels
  • d.           all of the above
• 5. Neural membranes are mostly composed of:
  • a.           chocolate
  • b.           proteins
  • c.           sugar
  • d.           lipids