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Jonathon Witting
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∙ 11y agoWhen impulses come into a neuron from synapses, and travel along the dendrites and across the soma to the axon hillock at the end of the soma, if there is a sufficiently strong summation of impulses at that axon hillock, it will trigger the opening of voltage-gated sodium ion pores at the beginning of the axon, which allow sodium ions to enter, which changes the membrane potential there, which opens additional nearby voltage gated sodium ion pores, letting more sodium ions in, which as it propagates and continues those actions is the action potential.
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∙ 13y agoNeurons transfer information in form of chemicals called neurotransmitters. But, they carry the signal in electrical form and secrete neurotransmitters themselves.
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∙ 12y agoBy action potential .
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What is a motor neuron attached to?
A Motor neuron is a neuron that carries impulses from the spinal cord to muscle cells.A Motor neuron is a neuron that carries impulses from the spinal cord to muscle cells.
Which reflex arcs contain no association neuron?
The patellar reflex is an example of a 2-neuron reflex arc. It has 1 sensory neuron and 1 motor neuron. It does not contain an association neuron and so is considered the most simple reflex in humans.
what are the differences between pre-synaptic and post-synaptic neuron?
Yes. A synapse by definition is the space (gap) between one neurons terminal buton and another neurons dendrites. So, the neuron with the terminal buton end is known as the pre-synaptic neuron and the neuron after the synapse is known as the post-synaptic neuron.
Structure that carries messages between the brain snd other parts of the body?
The Neuron, and in this case, a motor neuron or a sensory neuron.
What neuron is before a synapse?
The synapse consists of the two neurons, one of which is sending information to the other. The sending neuron is known as the pre-synaptic neuron (i.e. before the synapse) while the receiving neuron is known as the post-synaptic neuron (i.e. after the synapse).
When a neuron fires is there such thing as partial firing?
yes
What has to be crossed before the neuron fires?
Generator potential
The strong stimulus can increase the?
Number of times the neuron fires
When a neuron is depolarized to threshold?
1. The neuron fires an action potential, sending the electrical signal down the axon.
What cause neuron to fire?
The neuron adds up all the excitatory and inhibitory inputs and fires when they reach its threshold of excitation.
What kind of neuron fires when you observe someone elses behavior?
Mirror neurons are a type of neuron that fires both when an individual performs an action and when they observe someone else perform the same action. These neurons are thought to play a role in understanding and mimicking the actions and intentions of others, contributing to empathy and social cognition.
Refers to the fact that a neuron either fires completely or does not fire at all?
All or none
What refers to the fact that neuron either fires or completely or does not fire at all?
All or none
What refers to the fact that a neuron either fires completely or does not fire at all?
All or none
What was Excitation and Inhibition about?
Excitation and Inhibition occur in the neurons. Excitation is when a neuron becomes depolarized and fires an action potential. Inhibition is when a neuron becomes hyperpolarized preventing it from firing an action potential.
What kind of potential is it when a neuron fires?
When a signal is sent out from the nervous system it is caused a release of a neurotransmitter that releases an action potential.
The message that travels through a neuron?
A neural impulse. Specifically, once it fires, an action potential.
