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polarized
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∙ 14y ago
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What is a polarized neuron?
A neuron that is polarized is also at rest potential. At this stage it is not conducting an impulse and has sodium ions on the outside and potassium ions on the inside.
What is restpotential?
The resting membrane potential of a neuron is about -70 mV (mV=millivolt) - this means that the inside of the neuron is 70 mV less than the outside. At rest, there are relatively more sodium ions outside the neuron and more potassium ions inside that neuron.
How is the electrical charge inside the neuron?
Neurons send messages electrochemically and all chemicals in the body are electrically-charged. When neurons inside the body are electrically-charged, they are called ions. When a neuron is at rest, or not electrically-charged, the inside is negative and the outside is positive.
It is the membrane potential of a neuron at rest?
Yes,the membrane potential of a neuron is at rest because it is the difference in electrical charge between inside and outside a resting neuron.
When a neuron is in a resting state the majority of the particles in the fluid surrounding the neuron are?
polarized
What two factors maintain the unequal distribution of ions while the neuron is at rest?
strangely worded question i guess it is someone's homework. I suppose Factor 1: The neuron membranes have proteins which actively pump ions to create a potential (The Sodium/Potassium Pump) and Factor 2: charged ions slowly leak out through the cell membrane.
A resting neuron is when?
A neuron is at rest when theinside is negatively chraged compared to the outside.
Why Sodium and potassium ion can only cross in axon membrane through protein channel explain why?
At rest sodium in the outside and potassium on the inside as action potential propagate along the axon, depolirization happens and sodium channel opens and allow sodium ions to flood into the neurone. A wave of deporization spread along the neuron, the neuron membrane contain specialised protein called channels. the channel from pore.
What term is used to describe a neuron that is not transmitting a signal?
When a neuron is not transmitting a signal, it is at rest.
Why would a neuron not send an impulse?
If a neuron is not sending out an impulse or signal, this means the neuron is at rest. Neurons send signals electrochemically.
What is the Difference between a receptor and an action potential?
action potential has a threshold stimulus and depolarization is just change in membrae potential where inside becomes for positive relative to outside. The AP has the ability to actually transmit info over long distance in axons once threshhold stimulus/depolarization is reached
What term is used to describe a neuron that is not transmitting signal?
When a neuron is not transmitting a signal, it is at rest.
