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In non-myelinated axons, the nerve impulse is going to be produced when the action potential accross a membrane makes a wave of depolarization followed by a wave of repolarization. With the absence of the myelin, the impulse is transmitted continuously throughout the membrane.
In a non-myelinated nerve, once an end of the cell, the dendrite, is depolarized, the depolarization a.k.a., the action potential, moves along the nerve membrane, and the area of membrane immediately behind the depolarized section becomes repolarized.
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Mechanism of nerve conduction?
Nerve impulses are conducted along the axon in the myelinated nerve fiber with causes the polarity of the nerve.
COnduction speed of a nerve fiber would be the fastest in a?
...in a myelinated axon.
Which of the following types of nerve fiber possesses the fastest speed of impulse propagation?
Type A
What two factors increase the nerve conduction speed?
Whether the nerve fiber is myelinated or unmyelinated effects speed of a nerve impulse. A myelinated nerve impulse is faster. Also the diameter of the nerve fiber effects nerve impulse speed.
A myelinated nerve fiber is characterized as being whereas an unmyelinated?
Myelinated nerves are white, and composes the white matter of the brain and spinal cord they also are able to pass an action potential down an axon much faster; Unmyelinated nerves are gray, and composes the gray matter of the brain and spinal cord. These nerves transmit signals much slower
What is the difference in transmission between myelinated and unmyelinated fibers?
Impulse transmission on an unmyelinated nerve fiber is much slower than the impulse transmission on a myelinated nerve fiber.
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.
Mechanism of nerve conduction?
Nerve impulses are conducted along the axon in the myelinated nerve fiber with causes the polarity of the nerve.
The speed of nerve impulse transmission through the axon of a sensory neuron will be quickest in?
I'm guessing; "myelinated nerve fibres" contrary to the much slower "non-myelinated nerve fibres"
What are mircroscopic fiber that carries the nervous impulse along a nerve cell?
axon
What cause a nerve impulse move along the nerve fiber?
Electrical diferences.
What causes a nerve impulse move along the nerve fiber?
Electrical diferences.
Microscopic fiber that carries the nervous impulse along a nerve cell?
axon
Does an unmyelinated fiber conduct impulses faster than a myelinated fiber?
False
What is non-myelinated nerve fiber?
a nerve fiber that lacks the fatty myelin insulating sheath. Such fibers form the gray matter of the nervous system, as distinguished from the white matter of myelinated fibers. Also called nonmedullated nerve fiber.
COnduction speed of a nerve fiber would be the fastest in a?
...in a myelinated axon.
A group of myelinated fiber may form a region of nerve tissue called?
White matter
