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6. True or false: inhibitory post-synaptic potentials can undergo both spatial & temporal summation?
- True
- I'm sorry I haven't a clue
- False
- Pass
7. True or false: Inhibitory synapses tend to be close to the soma?
- Hmm... Just a minute
- true
- Pass
- False
8. What is the approximate resting membrane potentials of most neurons?
9. Which of the following groups are major inhibitory neurotransmitters?
- GABA, glycine & endorphins
- Noradrenalin, glycine & endorphins
- ACh, adrenalin & GABA
- ACh, noradrenalin & GABA
10. How do astrocytes maintain local homeostasis?
- Take up K+ from the extracellular space, convert glutamate to glutamine, protect neurons from low [NH4], and allow flow of all liquids across the BBB
- Take up K+ from the extracellular space, convert glutamate to glutamine, make sure neurons have a high [NH4], and maintain the BBB
- Take up K+ from the extracellular space, convert glutamate to glutamine, protect neurons from high [NH4], and maintain the BBB
- Take up Na+ from the extracellular space, convert glutamine to glutamate, protect neurons from high [NH4], and maintain the BBB
11. Complete the sentence: myelination of a neuron in the peripheral nervous system...
- Increases the risk of inflammation within the axon
- Decreases the metabolic demand because the Na+/K+ ATPases are localised to the nodes of Ranvier
- Reduce the risk of inflammation within the axon
- Increases the metabolic demand because the Na+/K+ ATPases are localised to the nodes of Ranvier
12. True or false: dendrites contain ribosomes and mRNA, suggesting some protein synthesis occurs in them?
- Yep, nope, well maybe, I don't really have a clue what's going on...
- True
- Pass
- False
13. Which of the following is a disadvantage of oligodendrocytes?
- The Na+/K+ pump is only found at nodes of Ranvier
- A disease process that affects one oligodendrocyte will affect up to 50 axons, meaning the consequences on the CNS can be huge
- The conduction velocity can be ~10x faster
- Oligodendrocytes are too metabolically efficient
14. Which cells myelinate the CNS?
- Astrocytes
- Oligodendrocytes
- Microglia
- Schwann cells
15. The signal processing centre is found in which of the following?
- Axon
- Microglia
- Soma
- Dendrites
16. What system does the enteric NS innervate?
- Renal system
- Respiratory system
- GI system
- Cardiovascular system
17. What makes up the PNS?
- Sensory, motor & enteric nervous systems
- Brain & spinal cord
- Somatic, autonomic & enteric nervous systems
- Parasympathetic, sympathetic & enteric nervous systems
18. Which of the following statements about axo-somatic synapses is true?
- They're normally explosive
- They're normally inhibitory
- They're normally excitatory
- They're normally implosive
19. What makes up the CNS?
- Sensory, motor & enteric nervous systems
- Somatic, autonomic & enteric nervous systems
- Brain & spinal cord
- Parasympathetic, sympathetic & enteric nervous systems
20. How many Schwann cells form each inter-nodal segment between two nodes of ranvier?