BIOLOGICAL BASES OF BEHAVIOR
BIOLOGICAL PSYCHOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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the neuron fires in an all-or-none fashion.
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the neuron fires at a greater strength.
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fewer neurons fire at the same time.
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the neuron cannot fire back.
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Detailed explanation-1: -The all-or-nothing law is an important principle that describes how nerve cells either fire at full strength or do not. Because of this, important information does not lose strength as it is carried to the brain, ensuring that people are able to respond to environmental stimuli.
Detailed explanation-2: -A nerve impulse begins when a neuron receives a chemical stimulus. The nerve impulse travels down the axon membrane as an electrical action potential to the axon terminal. The axon terminal releases neurotransmitters that ca rry the nerve impulse to the next cell.
Detailed explanation-3: -When a nerve impulse (which is how neurons communicate with one another) is sent out from a cell body, the sodium channels in the cell membrane open and the positive sodium cells surge into the cell. Once the cell reaches a certain threshold, an action potential will fire, sending the electrical signal down the axon.
Detailed explanation-4: -The process of normal neuronal firing takes place as a communication between neurons through electrical impulses and neurotransmitters. To better understand this process, it is important to understand the parts of a neuron, including the soma, dendrites and axons.
Detailed explanation-5: -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.