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Understanding Action Potentials and Synapses

Authored by nena henry

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University

Used 1+ times

Understanding Action Potentials and Synapses
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15 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the resting membrane potential of a neuron?

-55mV

-70mV

0mV

+30mV

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

At what membrane potential is an action potential triggered in a neuron?

-70mV

-60mV

-55mV

-50mV

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

During which refractory period is it impossible to trigger a new action potential?

Absolute refractory period

Relative refractory period

Resting period

Depolarization period

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens during exocytosis in a neuron?

Neurotransmitters are absorbed into the neuron.

Neurotransmitters are released into the synapse.

Vesicles are formed.

Calcium ions are released.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which ion is crucial for the release of neurotransmitters into the synapse?

Na+

K+

Ca2+

Cl-

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the role of Ca2+ in neurotransmitter release?

It depolarizes the neuron.

It triggers vesicles to release neurotransmitters.

It inhibits action potential.

It activates Na+ channels.

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the membrane potential of a neuron at rest?

-55mV

-70mV

+30mV

0mV

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