What is the role of calcium in neural signaling?
Cell Signaling & Neural Signaling Review

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•
Biology
•
11th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
Back
Calcium is responsible for signaling the release of neurotransmitters.
2.
FLASHCARD QUESTION
Front
What occurs when sodium voltage-gated channels close and potassium voltage-gated channels open?
Back
This process is called Repolarization, where potassium rushes out of the axon changing the membrane potential from +40mV to -70mV.
3.
FLASHCARD QUESTION
Front
When does a stimulus cause an action potential?
Back
An action potential occurs when the membrane potential reaches the threshold.
4.
FLASHCARD QUESTION
Front
What is a ligand in cell signaling?
Back
A ligand is a signal molecule that binds to a plasma-membrane protein.
5.
FLASHCARD QUESTION
Front
What is the primary role of neurotransmitters in neural communication?
Back
Neurotransmitters transmit action potentials across synapses.
6.
FLASHCARD QUESTION
Front
Define depolarization in the context of neural signaling.
Back
Depolarization is the process where the membrane potential becomes less negative (more positive) due to the influx of sodium ions.
7.
FLASHCARD QUESTION
Front
What is hyperpolarization?
Back
Hyperpolarization is when the membrane potential becomes more negative than the resting potential, often due to the efflux of potassium ions.
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