CNS & PNS Histology & Physiology - BM5 NLM1

1. At resting membrane potential, which of the following is most likely to be true?

  • There is a [K+] gradient from inside the neuron towards the outside, causing the inside of the cell to become comparatively negatively charged
  • There is a [Na+] gradient from inside the neuron towards the outside, causing the inside of the cell to become comparatively positively charged
  • There is a [Na+] gradient from inside the neuron towards the outside, causing the inside of the cell to become comparatively negatively charged
  • There is a [K+] gradient from inside the neuron towards the outside, causing the inside of the cell to become comparatively positively charged
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Other questions in this quiz

2. Which of the following is a disadvantage of oligodendrocytes?

  • Oligodendrocytes are too metabolically efficient
  • A disease process that affects one oligodendrocyte will affect up to 50 axons, meaning the consequences on the CNS can be huge
  • The Na+/K+ pump is only found at nodes of Ranvier
  • The conduction velocity can be ~10x faster

3. True or false: each oligodendrocyte can myelinate up to 50 axons?

  • True
  • False
  • Pass
  • Hmmm... anyone fancy a game of cards?

4. True or false: There are 10x more astrocytes than neurones in the body?

  • True
  • Hmm... Fancy a trip Round the Horne?
  • False
  • Pass

5. Which of the following groups are major inhibitory neurotransmitters?

  • ACh, noradrenalin & GABA
  • Noradrenalin, glycine & endorphins
  • GABA, glycine & endorphins
  • ACh, adrenalin & GABA

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