PHYSIOLOGY
NEUROTRANSMISSION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Stronger than that produced by weak stimulation
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Twice that produced by weak stimulation
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Weaker than that produced by weak stimulation
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No different to that produced by weak stimulation
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Detailed explanation-1: -Dendrites receive synaptic inputs from axons, with the sum total of dendritic inputs determining whether the neuron will fire an action potential.
Detailed explanation-2: -When an action potential reaches the axon terminal, the depolarization causes voltage-dependent calcium gates to open. As calcium flows into the terminal, the neuron releases neurotransmitters into the synaptic cleft for 1-2 milliseconds. This process of neurotransmitter release is called exocytosis.
Detailed explanation-3: -Glutamate. This is the most common neurotransmitter in the central nervous system. It is an excitatory neurotransmitter and usually ensures balance with the effects of gamma-aminobutyric acid (GABA), an inhibitory neurotransmitter.