two types of neuronal transmissions and how they differ?
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Saltatory transmission and non saltatory transmissions.Saltatory transmission happens in myelinated neurons, the impulse jumps from one node of Ranvier to the next one. It is faster than the non saltatory one that happens in the unmyelinated neuron where the impulse travels throughout the whole axon.
809192
Although the nervous system is very complex, there are only two main types of cells in nerve tissue. The actual nerve cell is the neuron. It is the "conducting" cell that transmits impulses and the structural unit of the nervous system. The other type of cell is neuroglia, or glial, cell. The word "neuroglia" means "nerve glue." These cells are nonconductive and provide a support system for the neurons. They are a special type of "connective tissue" for the nervous system.\nNeurons\n\nNeurons, or nerve cells, carry out the functions of the nervous system by conducting nerve impulses. They are highly specialized and amitotic. This means that if a neuron is destroyed, it cannot be replaced because neurons do not go through mitosis.
201083
I'm not quite sure what you are asking, but I think the answer you want is that each ganglion contains the cell bodies of the sensory neurones.\nUnipolar motor neurones have their cell bodies within the spinal cord.
835890
The VISUAL CORTEX receives written words as visual stimulation. Then, the ANGULAR GYRUS transforms visual stimulations into an auditory code. Then it gets transmitted to the WERNICKE'S AREA whic interprets auditory code (language comprehension) Then it gets passed to the BROCA'S AREA which controls speech muscles in the motor cortex of the brain. Then the signal is passed to the MOTOR cortex where the word is signaled to be pronounced
637350
INFORMATION IS CONDUCTED ELETROCHEMICALLY BY THE NEURONS THROUGH VARYING CONCENTRATIONAS OF Na and K ions across the myelin seath of the neurons.in a neuron at rest there is more conc. of k ions on the inner side(this is the polarised region) and more conc. of Na ions on the outer side(depolarised region) .thus the inner side is at a greater potential than the outer side .when a stimulas is received the conc. in a particular regin of the neuron begins to change. K IONS move to the outer side and Na ions move to the inner side.now in that part of the neuron the outer membrane is at a higher potential than the the inner membrane. in the outer region the Kions are surrounded by large number of Na ions due to this a current sink develops and the K ion move back to the inner side while Na ions move back to the outer region and this region gets repolarised.but the region next to this gets deolarised in the process.thus the nerve impulse travels across the neuron as a wave of polarisation, depolarisation and repolarisation.\n           as the nerve impulse reaches the terminals of the neuron called dendrites the vesicles present there release ascetylcholine and this neurotransmitter transfers messages from one neuron to another and the above process continues till the message reaches the concerned organ.
380291
We have absolutely no idea what the biological mechanism is, where the seat of conciousness is, not what other animals may or may not possess it. If anyone tells you otherwise, they are lying-We don't even understand the biological basis of simple learning and behaviour, and cannot, from a complete three dimensional diagram of a 1000-neuron worm brain, tell you anything about it's behaviour. We are as close to understanding the most profound and complex functions of the brain as a monkey is to learning computer programming. I both teach and research in this area, and I guarantee you that we are still at the most basic level of understanding brain function.
105755
I suspect it is a biochemical process. I skimmed the attached reference, and here is what I was able to pull out: \n\nThere is a complicated process that takes place in the neurons. Chemical action separates positive sodium and potassium ions from anions across a membrane, creating an electric field. Neurotransmitters open ion gateways in the membrane when the field is built up to a certain level. This allows an electromagnetic wave to travel down the nerve. \n\nIt is MUCH more complicated than that, but that is a simplified cartoon version of the events I think.
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It’s pretty much where excitatory and inhibitory signals are summated.  If there is enough stimulation to reach threshold the neuron fires an action potential here.  This is basically the first domino of a whole line.  Once it goes the signal travels down the rest of the axon, but this is where it starts.
216233
Nervous system is much faster in their rate of control mostly because of the way they communicate.  Nervous system communicates via neurotransmitters that are sent from one neuron to the next at a synapse.  This neurotransmitter, such as acetylcholine, will cause ion channels to open and an action potential to take place.  The rate at which these action potentials take place determines the action or sense that your nervous system transmits.  The endocrine system, on the other hand is a lot slower because the hormone molecules it sends out have to find its way to the effector organs.  To do this, the hormones have to travel through the blood system, reach the organs, and then bind to the cellular receptors.  Even after this has happened, these endocrine hormones tend to cause cascades in target cells to take place before the initended effect takes place.  These cascades include tyrosine kinase or g-protein coupled receptor phosphorylation cascades that ultimately result in transcription and translation of genes.  This process also is a lot slower than the process of action potential in the nervous system.
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Neurons are a major class of cells (parenchyma) in the nervous system whose main role is to process and transmit information. In vertebrate animals, neurons are found in the brain, the spinal cord and in the nerves and ganglia of the peripheral nervous system.\n\nNeurons are typically composed of a cell body, a dendritic tree and an axon. In the classic view of vertebrate neuron function, the cell body and dendritic tree receive electrical signals from other neurons while the axon transmits electrical output signals. For invertebrate neurons, the information flow is less well defined.\nYOUR QUESTION:\nAre they the motor end plates of the effector neurones?\nYES:\nNeurons are able to generate and propagate electrical impulses because they have excitable membranes. Neurons make connections with other neurons and transmit information to them via synaptic transmission. Different types of neurons have different shapes(Like Plates), possess specific electrical properties adopted for their function and use different neurotransmitters.
127791
the two-neuron arc is going to be faster than the three-neuron one.  two connected neurons form a shorter chain than three therefore the reflex is going to be faster.
217155
Although serotonin is broadly distributed in the brain because it is a neurotransmitter, it is created in the cell body of the neuron.  Neurotransmitters are how brain cells (neurons) communicate with each other at the junction where the come in close contact. Neurotransmitters bridge the gap between neurons. They are produced in the body of the neuron where the cellular machinery needed to make them is located.  They are transported to the synapse  (the gap)by specific proteins inside the neuron or attached to the cell membrane of the neuron.  once released into the synapse specific proteins on the cell membrane can bind them and bring them back inside or degrade them.  Most are brought back into the neuron so they can be used again the next time the neuron needs them.
462235
Depends on the function. For example, voluntary movement requires central nervous system and musculo-skeletal system working together, i.e. impulse arises from the motor cortex in the brain, travels through the central/peripheral nervous system to the muscle(s) needed to allow for specific movement, feedback from sensory receptors go back to brain to finetune movement accordingly. (a very basic explanantion!)
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Both:\n\nNeurotransmitters bond to activation sites to stimulate gates to open to pass on a signal along a signal transdunction line. Then the neurotransmitters break apart and inhibit the signal from going past the synapse. However, they are mainly stimulatory, since the only way they inhibit a signal is by breaking apart. So i guess i would actually say they stimulate gates to open
548091
try this link and it should answer your question it is with diagram!\n\nhttp://en.wikipedia.org/wiki/Central_nervous_system
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There are two types of homunculus - sensory and motor.\n\nTo move any part of the body, the signals originate in a certain part of the brain. When the representation in our brain of which part of the body it stimulates is drawn, we get a little man inside in our brain. This is called the motor homunculus. \nSimilarly there is a sensory homunculus where the sensations felt by each and every part of the body goes in the brain.
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When the electrical impulse reaches the end of the axon it is transferred to the next nerve cell so the message can continue. At the end of the axon the cell widens out and forms a bulb which comes close to but does not touch the next nerve cell. It is this tiny space between the two cells that is referred to as a synapse. Transmission of the signal across a synapse involves the release of a chemical, called a neurotransmitter, which passes from one cell to the other across the synapse. The neurotransmitter acts on receptor sites on the second cell's membrane, changing its permeability to sodium ions and thus stimulating depolarization. In this manner the nerve impulse is transferred to the second cell.