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Why the transmission of nerve impulse is faster in medullated nerve fiber than in non-medullated nerve fiber?
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.
What else can I help you with?
What is the function of a medullated nerve?
Medullated nerves are covered by a myelin sheath, which helps to increase the speed of electrical impulses traveling along the nerve fiber. This allows for faster and more efficient transmission of signals in the nervous system.
When the nerve impulse encounters a myelin-covered section of neuron?
When the nerve impulse encounters a myelin-covered section of a neuron, it jumps between the nodes of Ranvier, allowing for faster transmission speed due to saltatory conduction. Myelin acts as an insulator, preventing the impulse from dissipating and increasing the efficiency of signal transmission along the neuron.
What is the material surrounding the axon that increases the speed of the nerve impulse?
The material surrounding the axon that increases the speed of the nerve impulse is called myelin. Myelin is a fatty substance that acts as an insulating layer, allowing for faster transmission of electrical signals along the axon.
What will conduct a nerve impulse faster thick or thin axon?
Thick axons conduct nerve impulses faster than thin axons because they have a lower resistance to the flow of electrical signals. This allows for quicker transmission of signals along the axon.
How does the structure of the sensory neurone maximise the speed of an impulse passing through it?
The structure of a sensory neuron is optimized for the speed of impulse transmission through features such as a long axon with a myelin sheath and nodes of Ranvier. The myelin sheath insulates the axon, allowing for faster saltatory conduction of the signal. Additionally, the clustered sodium channels at the nodes of Ranvier help in rapid depolarization, enhancing the speed of the impulse.
What is the function of a medullated nerve?
Medullated nerves are covered by a myelin sheath, which helps to increase the speed of electrical impulses traveling along the nerve fiber. This allows for faster and more efficient transmission of signals in the nervous system.
When the nerve impulse encounters a myelin-covered section of neuron?
When the nerve impulse encounters a myelin-covered section of a neuron, it jumps between the nodes of Ranvier, allowing for faster transmission speed due to saltatory conduction. Myelin acts as an insulator, preventing the impulse from dissipating and increasing the efficiency of signal transmission along the neuron.
The greater the amount of coating the axon the faster the nerve impulse will be transmitted to the synapse.?
myelin
What is the material surrounding the axon that increases the speed of the nerve impulse?
The material surrounding the axon that increases the speed of the nerve impulse is called myelin. Myelin is a fatty substance that acts as an insulating layer, allowing for faster transmission of electrical signals along the axon.
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).
What will conduct a nerve impulse faster thick or thin axon?
Thick axons conduct nerve impulses faster than thin axons because they have a lower resistance to the flow of electrical signals. This allows for quicker transmission of signals along the axon.
How does the structure of the sensory neurone maximise the speed of an impulse passing through it?
The structure of a sensory neuron is optimized for the speed of impulse transmission through features such as a long axon with a myelin sheath and nodes of Ranvier. The myelin sheath insulates the axon, allowing for faster saltatory conduction of the signal. Additionally, the clustered sodium channels at the nodes of Ranvier help in rapid depolarization, enhancing the speed of the impulse.
Why are myelinated axons faster than unmyelinated axons?
Myelinated axons are faster than unmyelinated axons because the myelin sheath acts as an insulator, allowing for faster transmission of electrical signals along the axon. This insulation helps to prevent signal loss and allows the electrical impulse to "jump" from one node of Ranvier to the next, a process known as saltatory conduction, which speeds up the transmission of the signal.
Which structure is coated with myelin to increase speed of nerve impulse transmission?
The structure coated with myelin to increase the speed of nerve impulse transmission is the axon. Myelin is a fatty substance that forms a protective sheath around the axon, facilitating faster electrical signal conduction through a process called saltatory conduction. This allows the nerve impulses to jump between the gaps in the myelin sheath, known as nodes of Ranvier, significantly enhancing transmission speed.
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
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.
