Physiology - Action Potential Quiz
Test Your Knowledge on Action Potentials
Delve into the fascinating world of neurophysiology with our Action Potential Quiz! This quiz is designed to challenge your understanding of the physiological processes involved in neuronal action potentials. From resting membrane potential to the nuances of voltage-gated channels, test your knowledge and reinforce your learning.
Key Features:
- Multiple choice questions to assess your understanding
- Insightful explanations with each question
- Perfect for students and enthusiasts of neuroscience
A typical neuron has a resting membrane potential of about
+70 mV
+70 V
ˆ’70 mV
ˆ’70 V
At the peak of the action potential, the membrane potential is:
Exactly at the Na+ equilibrium potential (VNa)
Close to but less positive than the Na+ equilibrium potential (VNa)
Close to but more positive than the Na+ equilibrium potential (VNa)
Exactly at 0 mV
The same as the resting membrane potential (Vrest)
At what membrane voltage do neuronal voltage-gated Na+ channels become activated?
ˆ’70mV
0 mV
+30 mV
ˆ’50mV
None of the above
The hyperpolarization phase of the action potential is due to
The opening of voltage-gated Cl− channels
The prolonged opening of voltage-gated K+ channels
The closure of resting Na+ channels
Due to the closure of Cl− channels
None of the above
During this phase of the action potential, if a second stimulus is applied to the neuron (no matter how strong the stimulus), a second action potential will not be generated
Absolute refractory period
Relative refractory period
Hyperpolarization phase
Resting state
A+B
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