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The rate at which a nerve impulse travels along a nerve fibers is dependent up on -
- a)Length of the nerve fibre
- b)Diameter of the nerve fibre
- c)Presence of connective tissue sheath
- d)None of the above
Correct answer is option 'B'. Can you explain this answer?
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Most Upvoted Answer
The rate at which a nerve impulse travels along a nerve fibers is depe...
The conduction speed of a nerve impuose depends on the diameter of the axon....
The greater the axon's Diameter,the faster is the conduction. ..
so, Option B is correct.....
The greater the axon's Diameter,the faster is the conduction. ..
so, Option B is correct.....
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The rate at which a nerve impulse travels along a nerve fibers is depe...
Factors Affecting the Rate of Nerve Impulse Transmission
Factors affecting the rate at which a nerve impulse travels along a nerve fiber include:
Length of the nerve fiber
- The length of the nerve fiber does not significantly affect the rate of nerve impulse transmission. The speed of the impulse is not dependent on the total length of the nerve fiber.
Diameter of the nerve fiber
- The diameter of the nerve fiber plays a crucial role in determining the speed of nerve impulse transmission. Larger nerve fibers have lower resistance to the flow of ions, resulting in faster transmission of impulses. Smaller nerve fibers have higher resistance, leading to slower transmission.
Presence of connective tissue sheath
- The presence of a connective tissue sheath, such as the myelin sheath in myelinated nerve fibers, significantly affects the speed of nerve impulse transmission. The myelin sheath acts as an insulator, allowing for saltatory conduction where the impulse jumps from one node of Ranvier to another, increasing the speed of transmission.
Therefore, the diameter of the nerve fiber is the most crucial factor in determining the rate at which a nerve impulse travels along a nerve fiber. Larger diameter fibers conduct nerve impulses faster than smaller diameter fibers due to lower resistance to ion flow.
Factors affecting the rate at which a nerve impulse travels along a nerve fiber include:
Length of the nerve fiber
- The length of the nerve fiber does not significantly affect the rate of nerve impulse transmission. The speed of the impulse is not dependent on the total length of the nerve fiber.
Diameter of the nerve fiber
- The diameter of the nerve fiber plays a crucial role in determining the speed of nerve impulse transmission. Larger nerve fibers have lower resistance to the flow of ions, resulting in faster transmission of impulses. Smaller nerve fibers have higher resistance, leading to slower transmission.
Presence of connective tissue sheath
- The presence of a connective tissue sheath, such as the myelin sheath in myelinated nerve fibers, significantly affects the speed of nerve impulse transmission. The myelin sheath acts as an insulator, allowing for saltatory conduction where the impulse jumps from one node of Ranvier to another, increasing the speed of transmission.
Therefore, the diameter of the nerve fiber is the most crucial factor in determining the rate at which a nerve impulse travels along a nerve fiber. Larger diameter fibers conduct nerve impulses faster than smaller diameter fibers due to lower resistance to ion flow.
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The rate at which a nerve impulse travels along a nerve fibers is dependent up on -a)Length of the nerve fibreb)Diameter of the nerve fibrec)Presence of connective tissue sheathd)None of the aboveCorrect answer is option 'B'. Can you explain this answer?
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