Podcast
Questions and Answers
What is the term used to describe a neuron with a negative membrane potential?
What is the term used to describe a neuron with a negative membrane potential?
- Equilibrated
- Polarised (correct)
- Depolarised
- Hyperpolarised
Which ion occupies a higher proportion in the inner membrane of a neuron?
Which ion occupies a higher proportion in the inner membrane of a neuron?
- Calcium
- Chloride
- Potassium (correct)
- Sodium
What type of ion channels open due to the physical stretching or deformation of the membrane?
What type of ion channels open due to the physical stretching or deformation of the membrane?
- Potassium-Gated Channels
- Mechanically-Gated Channels (correct)
- Ligand-Gated Channels
- Voltage-Gated Channels
What does the sodium-potassium pump do to establish an electrochemical gradient across the cell membrane?
What does the sodium-potassium pump do to establish an electrochemical gradient across the cell membrane?
What is a 'graded' potential that is not sufficient to propagate along the axon?
What is a 'graded' potential that is not sufficient to propagate along the axon?
What does the resting membrane potential of a neuron typically measure at?
What does the resting membrane potential of a neuron typically measure at?
In what state is a neuron when it possesses a negative membrane potential?
In what state is a neuron when it possesses a negative membrane potential?
At what membrane potential do voltage-gated sodium channels typically open, leading to a rapid influx of sodium ions?
At what membrane potential do voltage-gated sodium channels typically open, leading to a rapid influx of sodium ions?
During the peak phase of an action potential, what contributes to a further influx of sodium ions?
During the peak phase of an action potential, what contributes to a further influx of sodium ions?
What process helps balance the membrane potential by allowing potassium ions to exit the neuron?
What process helps balance the membrane potential by allowing potassium ions to exit the neuron?
