Graded Potentials and Neuronal Communication Quiz

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5 Questions

What is the primary factor affecting the speed of action potential?

Myelination

Which type of potential makes it harder to initiate a neural message?

Inhibitory graded potential

What triggers the opening of calcium channels in the synaptic bulb during a chemical synapse?

Change in resting potential

Which ion is involved in a positive feedback loop during the generation of graded potential?

Sodium

How does the amplitude of an action potential change?

It does not change

Study Notes

Factors Affecting Action Potential

  • The primary factor affecting the speed of action potential is the myelination of the axon.

Types of Potentials

  • A hyperpolarizing potential makes it harder to initiate a neural message.

Chemical Synapse

  • The opening of calcium channels in the synaptic bulb during a chemical synapse is triggered by an action potential.

Graded Potential

  • Potassium ions are involved in a positive feedback loop during the generation of graded potential.

Action Potential Amplitude

  • The amplitude of an action potential remains constant, it does not change.

Test your knowledge of graded potentials and their impact on neuronal communication with this quiz. Explore topics such as hyperpolarization, depolarization, inhibitory graded potentials, and the mechanisms of sodium and potassium in feedback loops. Dive into concepts of summation, including temporal and spatial, and enhance your understanding of the role of sodium channels in local depolarization.

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