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Why the transmission of nerve impulse is faster in medullated nerve fiber than in non-medullated nerve fiber?
Wiki User
∙ 14y ago
generally the impulse is nothing but the stimulus carried to a part of body to carry out specific action in response to that stimulus.it is transmitted from one neuron to another or one neuron to another organ.this is carried all along the neuron and at the end that is at the synapse it gets diffused in neurotransmitter and again transmitted to another organ or neuron.
this is carried very faster.this is started polarization of neuron and once polarized and being transmitted it cant be again polarized
this occurs even more fastly in .mylenated neurons than in nonmylenated.bec in mylenated neurons the axon is partly covered by myleinshreath.this myleinshreath has a special property that it doesn't allow ions to pass through it.since polarization is occurred due to movement of ions in and out of axons,and the mylein shreath doesn't allow this the leaping of ions occurs.and as a result impulse been transmitted as a loop of current by taking leap at mylein shreath.
while in nonmylenated ones no such leaping occurs and it is transmitted slowly all along the length of axon.so impulse transmission occurs very fast in mylenated ones.
Wiki User
∙ 14y ago
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How does the structure of the sensory neurone maximise the speed of an impulse passing through it?
it lets it go throu faster like a pump
Would conduction speed of a nerve fiber be the fastest in a large or small myelinated fiber?
Yes. Myelinated fibers have a myelin sheath around them which keeps the impulse from scattering and on a direct path. This makes the impulse travel faster than unmyelinated fibers.
Which is faster Endocrine function compared to nervous function?
Nervous is much faster. Impulse transmission happens in mSecs to seconds, hormones are usually agonists of nuclear receptors, and affect gene transcription, which takes hours to days to take full effect.
Which impulses are faster myelinated or unmyelinated?
Neural transmission is different and MORE rapid in myelinated neurons
Is the flow of electrons in a wire faster than the movement of ions in a membrane?
Yes. A nerve impulse travels at approximately 100 mph while electricity in a wire travel roughly 3.00 x 108 m/s
Why does a reflex nerve pathway move faster than a normal nerve transmission?
Reflex nerve pathway is a monosynaptic transmission. There are no interneurons involved. Only the limb that carries the afferent nerve impulse from the stimulus and the efferent motor function for the reflex involved. That is why it is faster. Normal nerve transmission require an interpretation of the impulse by the brain whereas reflex pathways do not. Another reason is because most reflexes from the exteroreceptors travel along myelinated axons (white matter) which carry the impulse faster than other neurons that have unmyelinated axons (grey matter).
Why does the body use different sizes of nerves?
The larger the nerve, the faster the impulse.
The greater the amount of coating the axon the faster the nerve impulse will be transmitted to the synapse?
myelin
The greater the amount of coating the axon the faster the nerve impulse will be transmitted to the synapse.?
myelin
What is the fatty tissue that helps the impulse move faster as they travel from cell to cell?
The Myelin sheath
What makes one car faster then another?
Well what makes a car faster is the type of motor it carrys plus the transmission Well what makes a car faster is the type of motor it carrys plus the transmission Well what makes a car faster is the type of motor it carrys plus the transmission Well what makes a car faster is the type of motor it carrys plus the transmission
Why digital transmission is preferred than analog transmission?
Faster responce.
How fast is impulse power on StarTrek?
== == From what I remember, impulse speed was used to dock and leave a space station; so it would make sense that this form of movement has a low velocity (try parking a car at 80mph). Warp speed is supposedly faster than the speed of light, I think... So warp speed is faster than impulse speed. Warp speed, as above, is faster than light, whereas impulse speed is used to move around within a sector of space. Warp speed is much, much faster. According to the Star Trek Encyclopedia, which uses the Okuda warp scale, impulse speed is 1/4 lightspeed, or 270 million km/h. Warp 1 is lightspeed, or 1078 million km/h. Any warp factor is considerably faster than impulse (or "sublight") engines.
What is a neuron identify the parts of the neuron and their functions?
there's the axon (the nerve) the electrical impulse goes down that and covering the axon is the myelin sheath, otherwise known as a fatty sheath which insulates and helps make the electrical impulse go faster. In between each myelin sheath there are synapses (gaps between each one) and the impulse has to cross the gap so neurotransmitters are released which bind to receptors on the other side creating another electrical impulse which makes it travel even faster.
How does the structure of the sensory neurone maximise the speed of an impulse passing through it?
it lets it go throu faster like a pump
Why does automatic transmission brake pads wear faster than manual transmission?
With a manual transmission you downshift to slow down in situations where in an automatic you would have to use the brakes. Using brakes more = brakes wearing faster.
What impulse conduction is the fastest in neurons?
Axons conduct the nerve impulses. Dendrites receive the impulses. Possible the impulses go through the dendrites faster, though the synaptic cleft may slow this pathway. Dendrites are much shorter than axons.
