Neuron Phys & Synapse

Flashcard
•
Biology
•
11th - 12th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What are neurotransmitters?
Back
Chemical messengers released from the presynaptic neuron that transmit signals across the synapse to the postsynaptic neuron.
2.
FLASHCARD QUESTION
Front
What is the synaptic cleft?
Back
The small gap between the axon terminal of one neuron and the dendrite of another, where neurotransmitters are released.
3.
FLASHCARD QUESTION
Front
What is the role of the axon terminal?
Back
The axon terminal (pre-synaptic bulb) is the end of a neuron where neurotransmitters are stored and released into the synaptic cleft.
4.
FLASHCARD QUESTION
Front
What is resting potential?
Back
The electrical potential of a neuron when it is not actively sending a signal, typically around -70mV.
5.
FLASHCARD QUESTION
Front
Which ion is primarily involved in maintaining resting potential?
Back
Potassium (K+) ions are pumped into the axon to help maintain resting potential.
6.
FLASHCARD QUESTION
Front
What happens during synaptic transmission?
Back
Neurotransmitters are released from the presynaptic neuron, cross the synaptic cleft, and bind to receptors on the postsynaptic neuron.
7.
FLASHCARD QUESTION
Front
What is the function of dendrites?
Back
Dendrites are the branched extensions of a neuron that receive signals from other neurons.
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