Podcast
Questions and Answers
What unusual activity constitutes the propagation of an electrical signal?
What unusual activity constitutes the propagation of an electrical signal?
- Graded potentials
- Depolarization (correct)
- Repolarization
- Hyperpolarization
During depolarization, what type of ions flow into the cell?
During depolarization, what type of ions flow into the cell?
- Cl- ions
- K+ ions
- Ca2+ ions
- Na+ ions (correct)
What event characterizes repolarization during an action potential?
What event characterizes repolarization during an action potential?
- An influx of Na+ ions
- A decrease in voltage due to Cl- ions efflux
- Hyperpolarization
- A decrease in voltage due to K+ ions efflux (correct)
What is the membrane resting potential typically around?
What is the membrane resting potential typically around?
Which process is responsible for hyperpolarization?
Which process is responsible for hyperpolarization?
What causes depolarization during an action potential?
What causes depolarization during an action potential?
What are graded potentials?
What are graded potentials?
How are action potentials different from graded potentials?
How are action potentials different from graded potentials?
What is the threshold for an action potential?
What is the threshold for an action potential?
What is the resting membrane potential?
What is the resting membrane potential?
During an action potential, what occurs after depolarization?
During an action potential, what occurs after depolarization?
What leads to graded potentials adding up and propagating short distances along the membrane?
What leads to graded potentials adding up and propagating short distances along the membrane?
What is the average Resting Membrane Potential (RMP) of a typical neuron?
What is the average Resting Membrane Potential (RMP) of a typical neuron?
Which ion has a higher concentration inside the cell compared to outside?
Which ion has a higher concentration inside the cell compared to outside?
What is the voltage difference when the extracellular potential is defined as 0 V?
What is the voltage difference when the extracellular potential is defined as 0 V?
What happens during depolarization of a cell membrane?
What happens during depolarization of a cell membrane?
What is the main factor contributing to the Resting Membrane Potential (RMP)?
What is the main factor contributing to the Resting Membrane Potential (RMP)?
Which cell type exhibits a Resting Membrane Potential closest to -95 mV?
Which cell type exhibits a Resting Membrane Potential closest to -95 mV?
