Nerve Impulse Worksheet
Explore the fascinating world of nerve impulses with this worksheet, covering the structure of a neuron, action potential, and synaptic transmission.
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Nerve Impulse Worksheet
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Read each question carefully and provide your best answer based on your understanding of nerve impulses and neuron structure.
1. Label the following parts of the neuron shown in the diagram below.
A. (Dendrite)
B. (Cell Body/Soma)
C. (Axon)
D. (Myelin Sheath)
E. (Axon Terminal)
2. Which of the following best describes the resting membrane potential of a neuron?
Positive inside, negative outside
Negative inside, positive outside
Equal charge distribution
Constantly fluctuating between positive and negative
3. What is the primary role of the myelin sheath in nerve impulse transmission?
To produce neurotransmitters
To increase the speed of impulse conduction
To provide structural support to the neuron
To integrate signals from other neurons
4. The rapid influx of ions into the neuron causes depolarization during an action potential.
5. Neurotransmitters are released from the into the synaptic cleft.
6. The period during which a neuron cannot generate another action potential, regardless of stimulus strength, is called the period.
7. An action potential is an all-or-nothing event.
True
False
8. The repolarization phase of an action potential is primarily due to the outflow of potassium ions.
True
False
9. Briefly describe the role of the sodium-potassium pump in maintaining the resting membrane potential of a neuron.
10. Explain the process of synaptic transmission, from the arrival of an action potential at the presynaptic terminal to the generation of a postsynaptic potential.
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