EVERYDAY SCIENCE

SCIENCE

NERVOUS SYSTEM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is the chemical used by a neuron to transmit an impulse across a synapse to another nerve cell?
A
Neurotransmitters
B
Synapse
C
Threshold
D
Impulse
Explanation: 

Detailed explanation-1: -Neurotransmitter – A chemical released from a neuron following an action potential. The neurotransmitter travels across the synapse to excite or inhibit the target neuron. Different types of neurons use different neurotransmitters and therefore have different effects on their targets.

Detailed explanation-2: -Synaptic Transmission Chemical synapses use the release of chemical neurotransmitters to propagate signals from one neuron (presynaptic) to another (postsynaptic). The two cells are separated by the synaptic cleft, a gap of approximately 40 nm between the presynaptic and postsynaptic membranes.

Detailed explanation-3: -Thus, fast synaptic transmission uses neurotransmitters such as ACh, glutamate, GABA, glycine, dopamine (DA) and NE, all of which can be synthesized within the nerve terminal or transported rapidly across the nerve terminal plasma membrane.

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