PHYSIOLOGY
SLIDING FILAMENT MODEL
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Threshold
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Repolarization
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All or None Principle
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Action Potential
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Detailed explanation-1: -This principle is known as the all-or-none law. This means that neurons always fire at their full strength. This ensures that the full intensity of the signal is carried down the nerve fiber and transferred to the next cell and that the signal does not weaken or become lost the further it travels from the source.
Detailed explanation-2: -When a neuron is stimulated, an impulse in the form of an action potential is generated which travels down the length of the axon, and towards a connecting neuron.
Detailed explanation-3: -The nerve impulse caused by a change in the electrical charge across the cell membrane of the axon. When the neuron “fires, ‘’ this charge travels down the axon and causes neurotransmitters to be released by the terminal buttons. The fact that an action potential in the axon occurs either full-blown or not at all.