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Questions and Answers
What is the characteristic of the conduction of signals in muscle cells?
What is the characteristic of the conduction of signals in muscle cells?
- Signal dies out after a certain distance (correct)
- graded potential
- Saltatory conduction
- Signal propagation without decrement
What is the effect of low calcium and high magnesium/curare on vesicle release?
What is the effect of low calcium and high magnesium/curare on vesicle release?
- Vesicle release becomes more synchronized
- Reduced vesicle release (correct)
- No effect on vesicle release
- Increased vesicle release
What is the amplitude of miniature end plate potentials (MEPPs)?
What is the amplitude of miniature end plate potentials (MEPPs)?
- 1 mV
- 10 mV
- 0.5 mV (correct)
- 5 mV
What causes the spontaneous release of vesicles in the neuromuscular junction?
What causes the spontaneous release of vesicles in the neuromuscular junction?
What is the distribution of MEPPs observed by Katz?
What is the distribution of MEPPs observed by Katz?
What is the mechanism of the knee jerk reflex?
What is the mechanism of the knee jerk reflex?
What is the effect of curare on vesicle release?
What is the effect of curare on vesicle release?
What is the term for the small depolarizations of the postsynaptic terminal caused by the release of a single vesicle?
What is the term for the small depolarizations of the postsynaptic terminal caused by the release of a single vesicle?
What is the significance of the observation of spontaneous MEPPs?
What is the significance of the observation of spontaneous MEPPs?
What is the site of the mechanical stretching that causes the knee jerk reflex?
What is the site of the mechanical stretching that causes the knee jerk reflex?
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