0
What is an electrical signal in a neuron used to send messages in the body called?
Wiki User
∙ 11y agoWant this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
Is it true that motor neurons pass messages from neuron to neuron?
Yes, an electrical signal is passed from the dendrites of 1 motor neuron, through it's cell body, through it's axon (the long tail looking feature of the neuron). It then travels through branches of the axon and forms synapses with other motor neurons, this is how the electrical signal is passed.
What is impulse propagation?
It is the traveling of the electrical signal down the length of a neuron.
What is the part of the neuron that carries messages?
Dendrites carry messages to a cell body of a neuron.
Once transmission of an impulse is started it always?
Once the electrical, within-neuron signal starts, it will continue to the terminal end of the neuron in an all-or-none fashion, unless influenced by another neuron. For example, an inhibitory (e.g., GABA-ergic) neuron can stop or weaken the electrical signal in the first neuron (e.g., by increasing chloride influx). Once the neuron releases its transmitter, though, the transmitter has been released; however, that chemical signal can be modified either post- or pre-synaptically by action at the receptors. A+ students: the answer is completes the journey
When an electrical signal reaches the end of one neuron How is the signal picked up by the next neuron?
There is a closed space between them. It is called as synapse. A chemical is released in this space called neurotransmitter. Over 50 are identified but there may be several hundred of them. Most common are acetylcholine, noradrenaline, adrenaline, serotonin, dopamine, histamine, glycine, aspartate, glutamate etc. Acetylcholine is destroyed in milliseconds by an enzyme acetylcholinesterase. Noradrenaline is taken up back. So with the help of neurotransmitter signals are passed to next neuron.
Is it true that motor neurons pass messages from neuron to neuron?
Yes, an electrical signal is passed from the dendrites of 1 motor neuron, through it's cell body, through it's axon (the long tail looking feature of the neuron). It then travels through branches of the axon and forms synapses with other motor neurons, this is how the electrical signal is passed.
What is the path of an electrical impulse as it moves through a neuron?
The electrical impulse travels into the dendrites, the "input" of the neuron, and into the soma or "body" where the signal gets processed. From there, the processed signal travels down the axon or "output" and into the dendrites of another neuron.
What is the electrical message that travels along a neuron?
electrical signal
What is impulse propagation?
It is the traveling of the electrical signal down the length of a neuron.
When a neuron is depolarized to threshold?
1. The neuron fires an action potential, sending the electrical signal down the axon.
What are electrochemical impulses?
While a neural signal is chemically conveyed from one neuron to another by neurotransmitters, the electro-chemical neural impulse, which happens in the axon when the neuron fires, is called an action potential.
State why there is a brief delay in the transmission of an impulse across the synapse?
The impulse must go from one neuron to the next. To do this, it must change from an electrical to a chemical signal, and back to an electrical signal when it reaches the next neuron. Electrical signals are impossibly fast, but neurotransmitters cannot cross a synapse that fast. So, the impulse is at its slowest point when it crosses the synapse.
What is the part of the neuron that carries messages?
Dendrites carry messages to a cell body of a neuron.
When is an impulse an electrical signal?
When a stimulus causes positively charged ions to diffuse into the neuron.
How neurone work?
Neurons carry messages by converting a chemical signal into an electrical one, and vice versa. The dendrites of the neuron receive "messages" from chemicals that were released by another neuron. These chemicals are called "neurotransmitters". The neurotransmitter stimulates the neuron to depolarize. This means that the neuron's cell membrane becomes more permeable to sodium, and sodium moves into the cell. This causes the electrical charge of the cell to change, because sodium is positively charged. When it moves into the cell, the inside of the cell (or neuron) becomes less negatively charged and more neutral. At the same time, the area outside the cell becomes more negatively charged because of the positive sodium ions leaving that space. This rapid change in electrical charge is called "depolarization" and is essentially an electrical impulse. If the electrical charge is drastic enough (i.e., it meets the "threshold potential" by changing by at least 15 to 20 millivolts) the electrical signal carries all the way down the neuron into the axon. In the axon, a myelin sheath, or fatty covering, covers the neuron and essentially acts as insulation so that the electrical impulse can travel more quickly. Once the impulse reaches the axon terminal, it signals neurotransmitters to be released from that neuron and be interpreted by another neuron. Hence, the process starts all over again. I apologize for this answer being so long, there really is no way to answer this question briefly.
Once transmission of an impulse is started it always?
Once the electrical, within-neuron signal starts, it will continue to the terminal end of the neuron in an all-or-none fashion, unless influenced by another neuron. For example, an inhibitory (e.g., GABA-ergic) neuron can stop or weaken the electrical signal in the first neuron (e.g., by increasing chloride influx). Once the neuron releases its transmitter, though, the transmitter has been released; however, that chemical signal can be modified either post- or pre-synaptically by action at the receptors. A+ students: the answer is completes the journey
How does a signal cross from the axon of the neuron to the receiving cell?
When the electrical signal reaches the end of an axon, neurotransmitters are released. They travel across the synapse. Once they reach the receiving cell, they create a new electrical signal.
