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Questions and Answers
What is the main role of the presynaptic cell in neurotransmission?
What is the main role of the presynaptic cell in neurotransmission?
- Generating an electrical signal for transmission
- Receiving chemical signals from other neurons
- Converting the action potential into a chemical signal (correct)
- Amplifying the action potential
Where does the transformation from electrical to chemical signal take place in the presynaptic cell?
Where does the transformation from electrical to chemical signal take place in the presynaptic cell?
- Dendrites
- Cell body
- Synaptic cleft
- Axon terminal (correct)
How is neurotransmission often described due to the transformation from electrical to chemical signal?
How is neurotransmission often described due to the transformation from electrical to chemical signal?
- Purely electrical
- Mechanical in nature
- Biological in nature
- Electrochemical in nature (correct)
What type of ion channels are crucial in initiating the release of neurotransmitters at the axon terminal?
What type of ion channels are crucial in initiating the release of neurotransmitters at the axon terminal?
What is the main role of calcium ions at the axon terminal?
What is the main role of calcium ions at the axon terminal?
What is the ionic charge of calcium ions that enter the cell through voltage-gated calcium channels?
What is the ionic charge of calcium ions that enter the cell through voltage-gated calcium channels?
What is the chemical gradient that drives calcium ions into the cell at the axon terminal?
What is the chemical gradient that drives calcium ions into the cell at the axon terminal?
What is the function of neurotransmitters released at the axon terminal?
What is the function of neurotransmitters released at the axon terminal?
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