10 Questions
What happens when a cell receives a strong enough stimulation from another cell?
The cell membrane opens special gates for sodium ions to rush into the cell.
What is the result of sodium ions rushing into the cell during an action potential?
The inside of the cell becomes positively charged.
What initiates the electrical charge reversal in a neuron during an action potential?
Dendrites activating the cell membrane gates.
How does the electrical charge reversal move along the axon after initiation?
It moves down the axon in a chain reaction fashion.
What is one characteristic of an action potential sequence based on the information provided?
The fastest neurons can propagate at 270 miles per hour.
What is the primary reason the inside of a neuron is negatively charged when at rest?
Inability of negatively charged ions to exit the cell
Why do sodium ions cluster around the outside of a neuron's membrane during the resting potential?
Attraction between the positively charged sodium ions and the negative charge inside the cell
During resting potential, why are sodium ions unable to enter the neuron through its membrane?
The openings in the membrane are too small for sodium ions to pass through
What is the role of electrical potential in the resting state of a neuron?
Creating a difference in charges that keeps some ions outside and some inside
Why does the resting neuron have a negative charge inside compared to outside?
Charged particles inside are bigger and cannot exit through permeable membrane
Learn about the electrical charge of a neuron at rest and the distribution of charged ions inside and outside the cell. Understand the concept of resting potential and the permeability of the cell membrane.
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