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How does a neuron propagate nerve signals along its axon and to other neurons?
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Is an inter neuron the same as an association neuron?
Yes, an interneuron and an association neuron refer to the same type of neuron. Interneurons are responsible for transmitting information between sensory neurons and motor neurons, or between other interneurons in the central nervous system. They play a crucial role in integrating and processing information within the nervous system.
What do nerves do?
A neuron is like a relay switch - it receives signals from other neurons and depending on the nature of the signals, the neuron may then 'fire' a signal of its own, stay silent, or become inhibited. This is like binary code - i.e.,"on" and "off" states. A neuron can oscillate between these states in a variety of frequencies. So the range of computations that even a single neuron can perform is impressive. Now, consider that this sort of thing is happening billions of times every second all throughout the nervous system and you can intuitively grasp just how complex the patterns of signals would become. In fact, somewhere in those patterns is what we would call our 'mind' and our 'intelligence' and so on. And this is all because of a large collection of neurons (~100 billion at birth) relaying signals to each other through a multitude of pathways (trillions).
What is third order neuron?
A second order neuron is the 2nd neuron to carry an order. The order could be a sensory stimulus or a motor stimulus. For e.g. in order to move a muscle, the order for that muscle to contract starts at the cerebral cortex in the somatomotor area. That is the first order neuron. The axon of the 1st order neuron will synapse with the 2nd order neuron at the level of the brain stem, which commonly decussate (crosses over) to the opposite side. In turn, the axon of the 2nd order neuron will descend along the spinal cord tracts where it will synapse with the 3rd order neuron. The 3rd order neuron is located in the ventral horn of the spinal cord, which will exit with the spinal nerve to supply the muscle.
What is the pathway called that signals travel along during a reflex?
Sensory neurons which trigger reflexes are called nociceptive neurons. After entering the dorsal root of the spinal cord, the nociceptive neuron branches into two terminals: one terminal synapses with an interneuron - a localised neuron which is located entirely within the grey matter of the spinal cord, and this in turn synapses with a motor neuron which then triggers the fast reflex action. The reflex is initiated solely within the spinal cord & doesn't involve the brain at all, but at the same time, the second branch of the nociceptive neuron synapses with a sensory neuron which goes to the brain; the brain then registers the sensation of pain, and can also initiate further motor action if necessary.
How do three neurons work together?
she sneezed with the thundering force of a hurricane!
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.
What does each neuron do?
Sensory neurons carry signals from the receptors in our body (e.g. thermal, pressure etc.) to the relay neurons, which are found in our spinal cord. Relay neurons then send signals along the spinal cord to the brain. The brain then processes the information and sends a signal back down the spinal cord, through the relay neurons. Relay neurons then sends signals to motor neurons, which will then affect the muscles' movements.Read more: What_does_neuron_cells_do
What region of a neuron would have significant numbers of voltage-gated ion channels?
These are found along the axon and at the synapse. Voltage-gated ion channels directionally propagate electrical signals in one direction.
Imagine two neurons one is wrapped with a myelin sheath and has a large diameter the second neuron has no myelin sheath and a narrow diameter which of these neurons conducts a nerve impulse more rap?
Neurons send their impulses up and down the spinal cord. The myelin sheath is the coating around the spinal cord that protects it, and works to better conduct the signals along the cord. A neuron that has no myelin sheath will have a harder time conducting signals than one that is covered by the sheath.
What is the name of a message sent along a nerve?
Neurons. There are 3 main types: Sensory neuron. Relay neuron and... Motor neuron. I hope this answered your question!
Is an inter neuron the same as an association neuron?
Yes, an interneuron and an association neuron refer to the same type of neuron. Interneurons are responsible for transmitting information between sensory neurons and motor neurons, or between other interneurons in the central nervous system. They play a crucial role in integrating and processing information within the nervous system.
What do nerves do?
A neuron is like a relay switch - it receives signals from other neurons and depending on the nature of the signals, the neuron may then 'fire' a signal of its own, stay silent, or become inhibited. This is like binary code - i.e.,"on" and "off" states. A neuron can oscillate between these states in a variety of frequencies. So the range of computations that even a single neuron can perform is impressive. Now, consider that this sort of thing is happening billions of times every second all throughout the nervous system and you can intuitively grasp just how complex the patterns of signals would become. In fact, somewhere in those patterns is what we would call our 'mind' and our 'intelligence' and so on. And this is all because of a large collection of neurons (~100 billion at birth) relaying signals to each other through a multitude of pathways (trillions).
What does each do?
Sensory neurons carry signals from the receptors in our body (e.g. thermal, pressure etc.) to the relay neurons, which are found in our spinal cord. Relay neurons then send signals along the spinal cord to the brain. The brain then processes the information and sends a signal back down the spinal cord, through the relay neurons. Relay neurons then sends signals to motor neurons, which will then affect the muscles' movements.Read more: What_does_neuron_cells_do
What relays information for muscles?
Sensory neurons carry signals from the receptors in our body (e.g. thermal, pressure etc.) to the relay neurons, which are found in our spinal cord. Relay neurons then send signals along the spinal cord to the brain. The brain then processes the information and sends a signal back down the spinal cord, through the relay neurons. Relay neurons then sends signals to motor neurons, which will then affect the muscles' movements.Read more: What_does_neuron_cells_do
How does a nerve impulse begin?
In order a nerve impulse to be generated there needs to be a stimulus. A stimulus would be you burning your finger or bumping your arm. Once the nerve impulse has been generated it sends off to the neurons in your brain so that your brain can tell you to move your hand.
Do blood cells move from the axon terminal to the dendrites?
Technically a neural impulse moves from the cell body to the axon terminal, because a nerve impulse is defined as an electrical signal that travels along an AXON.This may be confusing because neural signals move in three places with respect to the neurons, in three correspondingly different ways, and only one is called the neural impulse.Neural signals move in these places: betweenneurons (ie, from one neuron to another), intoneurons, and along axons (the outputs of neurons, when a neuron has fired).BETWEEN NEURONS: A neural signal can be passed from one neuron to another, at a synapse, across the synaptic cleft, by the release of chemicals called neurotransmittersfrom the presynaptic neuron, which diffuse across the synaptic cleft, to fit into receptors on the postsynaptic neuron. This is a chemical transmission of the neural signal, not an impulse.INTO A NEURON: when a signal has passed from one neuron to another by the release, diffusion, and reception of neurotransmitters, it initiates a graded response in the dendrites of the postsynaptic neuron, which travels with decreasing strength down the dendrites and across the soma (cell body), until it reaches the root of the axon, the axon hillock. This graded response is also not an impulse.ALONG THE AXON: if enough graded response signalsreach the axon hillock at about the same time, (it might be helpful to think of them as degraded signals, since they get weaker the further they travel), such that their combined strengths can trigger an all or nothing action potential in the axon, then it can be said that the neuron has fired a neuronal impulse.So, there are neural signals which move betweenneurons and into neurons, and neural impulses which fire and move along axons from the cell body (soma).
Does association neurons connect to other neurons?
Yes they do. See, otherwise it wouldn't be an interneuron (its proper name) or have anything to 'associate' with. They relay signals along networks.
