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Is the resting potential of a neuron approximately -70 microvolts?
Yes, the resting potential of a neuron is typically around -70 millivolts (mV), not microvolts. The resting potential is the membrane potential of a neuron when it is not being stimulated to send a signal.
If a resting neuron is stimulated and there is an inward flow of positive charges into the cell the membrane potential will?
If a resting neuron is stimulated and there is an inward flow of positive charges into the cell, the membrane potential will depolarize, meaning the inside of the cell becomes less negative. This can trigger an action potential if the depolarization reaches the threshold level.
When several neurons are stimulated equally which one will fire first?
The neuron with the lowest threshold potential will fire first when several neurons are stimulated equally. Threshold potential is the minimum level of depolarization needed to trigger an action potential in a neuron. Neurons with lower threshold potentials are more excitable and will fire before neurons with higher threshold potentials.
Communication within a neuron is electrical while communication between neurons is chemical.?
Yes, that's correct. Within a neuron, communication occurs through electrical signals that travel along the neuron's axon. When these signals reach the synapse (junction between neurons), they trigger the release of chemical neurotransmitters that carry the signal to the next neuron.
The part of the neuron that has branched extensions that are specialized to receive information are the?
dendrites. Dendrites are specialized structures on a neuron that receive signals from other neurons and transmit them towards the cell body. They play a crucial role in integrating information from multiple sources to determine the neuron's response.
What is an unstimulated neuron?
It is a neuron that is at its resting potential, not stimulated by input from other neurons.
A neuron will generate action potentials when it?
A neuron will generate action potential when it is stimulated by a neurotransmitter.
What are the sources of stimulation that start a nerve impulse?
An impulse begins when a neuron is stimulated by another neuron or by the environment.
What does it mean by a neuron is highly irritable?
irritability (ability to be stimulated)
What is mean by a neuron is highly irritable?
irritability (ability to be stimulated)
When a stimulus acts on a neuron it decreases the permeability of the stimulated point of its membrane to sodium ions?
False( When a stimulus acts on a neuron, it increases the permeability of the stimulated point of its membrane to sodium ions. )
How is a skeletal muscle fiber stimulated by a motor neuron?
motor unitUnit
When the neuron is sussiciently stimulated this process and triggers the action potential?
depolarization
A neuron that is excited to subthreshold is said to be?
It has become activated/stimulated.
When cholinergic receptors are stimulated they?
sodium ions enter the postsynaptic neuron.
When the neuron is sufficiently stimulated this process occurs and triggers the action potential?
depolarization
What is the main part of the of a neuron?
It depends on what you mean by 'main'. The AXON is the part which CONVEYS the neural impulse, which could be thought of as the main FUNCTION of the neuron. But the DENDRITES are the parts which assess whether the neuron has been stimulated enough to fire the axon, which is another fundamental function of some neurons. And the BODY (soma) of the neuron is very much a 'main' part of the neuron, because without it the neuron would die.
