NERVOUS SYSTEM SPECIAL SENSE
SPINALCORD
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which of the following types of nerve fiber possesses the fastest speed of impulse propagation?
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Type A fibers-large diameter + myelinated
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Type B fibers-smaller diameter + myelinated
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Type C fibers-Smaller unmyelinated fibers
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Type D fibers-larger unmyelinated fibers
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Explanation:
Detailed explanation-1: -The fastest signals in our bodies are sent by larger, myelinated axons found in neurons that transmit the sense of touch or proprioception – 80-120 m/s (179-268 miles per hour).
Detailed explanation-2: -The fastest are nerves contained within a myelin sheath, and tend to be responsible for sensory detection (detection of external stimuli i.e. temperature, sight) rather than motor reactions (responsible for movement).
There is 1 question to complete.