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Questions and Answers
What is the resting membrane potential (RMP) for a medium size nerve?
What is the resting membrane potential (RMP) for a medium size nerve?
What is the minimal intensity of stimulus needed to excite the nerve and produce action potential called?
What is the minimal intensity of stimulus needed to excite the nerve and produce action potential called?
What occurs due to the slow closure of K+ channels and continuous outflow of K+?
What occurs due to the slow closure of K+ channels and continuous outflow of K+?
What is the difference in electric potential between the inside and outside of the membrane of the nerve under resting condition with negative inside in relation to outside called?
What is the difference in electric potential between the inside and outside of the membrane of the nerve under resting condition with negative inside in relation to outside called?
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What produces local response (local changes in membrane potential) when the nerve is stimulated by a subthreshold?
What produces local response (local changes in membrane potential) when the nerve is stimulated by a subthreshold?
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What causes depolarization in a neuron?
What causes depolarization in a neuron?
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Study Notes
Resting Membrane Potential (RMP)
- The resting membrane potential (RMP) of a medium-sized nerve is typically around -70mV.
Stimulus Intensity
- The minimal intensity of stimulus needed to excite the nerve and produce an action potential is called the threshold stimulus.
Potassium Channels
- The slow closure of K+ channels and continuous outflow of K+ leads to the repolarization of the neuron.
Electric Potential
- The difference in electric potential between the inside and outside of the membrane of the nerve under resting conditions is called the resting potential, with the inside being negative in relation to the outside.
Local Response
- A subthreshold stimulus produces a local response, which are local changes in membrane potential.
Depolarization
- Depolarization in a neuron is caused by an inward flow of positively charged ions (e.g. Na+ or Ca2+) or an outward flow of negatively charged ions (e.g. Cl-).
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Description
Test your knowledge of neuron anatomy and action potential physiology, including the resting membrane potential and the components of a neuron. This quiz covers the basic concepts of the anatomical and physiological properties of neurons.
