Which of the following is true about action potentials? When a neuron is inactive or resting,...

Which of the following is true about action potentials?

When a neuron is inactive or resting, the neuron is said to be polarized
Myelin insulates the axon to prevent leakage of the current as it travels down the axon
Dendrites are responsible for receiving most of the input from other neurons
The voltage at which a signal is generated is called the threshold
All of the above

Expert Solution

All the given statements are correct.

When a neuron is inactive or resting there is a potential difference across the cell membrane,that is outside of membrane is positive and inside is negative.Therefore,at resting period neuron is said to be polarized.
Like the rubber coating on a copper wire, the myelin sheath—a membrane extension of glial cells that spirals around the axons of neurons—creates an insulation layer that prevents current leakage from axons and aids electrical conduction along the length of the axon.
Dendrites receiving the most of the input signals from other neurons.The functions of dendrites are to receive signals from other neurons, to process these signals, and to transfer the information to the soma of the neuron
Threshold voltage or potential is necessary to generate and propogate signaling.Most often, the threshold potential is a membrane potential value between –50 and –55 mV, but can vary based upon several factors.

gladiator answered 1 year ago

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