Nerve Impulse Worksheet
Explore the fascinating process of nerve impulse transmission with this comprehensive worksheet for Grade 10 science students.
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Nerve Impulse Worksheet
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Date:
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Read each question carefully and answer to the best of your ability. Refer to the diagram of the neuron as needed.
Figure 1: Structure of a Neuron
1. Which part of the neuron receives chemical signals from other neurons?
Axon
Dendrite
Cell body
Myelin sheath
2. What is the brief electrical charge that travels down the axon of a neuron?
Resting potential
Synaptic potential
Action potential
Threshold potential
3. The gap between two neurons where information is transmitted is called a .
4. Neurotransmitters are chemical messengers that are released from the terminal.
5. The sheath insulates the axon and speeds up the transmission of nerve impulses.
6. A nerve impulse travels faster in an unmyelinated axon than in a myelinated axon.
True
False
7. The 'all-or-none' principle states that a neuron either fires completely or not at all.
True
False
8. Describe the role of sodium and potassium ions in the generation of an action potential.
9. Explain what happens at the synapse when a nerve impulse arrives.
Match the term on the left with its definition on the right.
10. Dendrite
a. Transmits signals away from the cell body
11. Axon
b. Receives signals from other neurons
12. Synapse
c. Chemical messengers
13. Neurotransmitters
d. Gap between neurons
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