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Questions and Answers
What is the primary function of the myelin sheath?
Nerve cells are short and thick to ensure efficient transmission of messages.
False
What are the branches at the end of nerve cells called?
dendrites
The axon of a nerve cell is surrounded by a ______ that acts as insulation.
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Match the parts of a nerve cell with their functions:
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What is the primary structure that surrounds the axon of a nerve cell?
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Nerve cells are short and thick to ensure efficient transmission of messages.
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What role do dendrites play in nerve cells?
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The axon of a nerve cell is surrounded by a ______ that provides electrical insulation.
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Match the following components of a nerve cell with their functions:
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Study Notes
Nerve Cell Structure and Function
- The primary function of the myelin sheath is to insulate axons, thereby increasing the speed of nerve impulse transmission.
- Nerve cells are not short and thick. They can be very long, with some extending from the brain to the toes. The diameter of an axon can also vary, with thicker axons generally conducting impulses faster.
- The branches at the end of nerve cells are called axon terminals. These terminals release neurotransmitters into the synapse, allowing communication between neurons.
- The axon of a nerve cell is surrounded by a myelin sheath that acts as insulation.
- The myelin sheath is the primary structure that surrounds the axon of a nerve cell.
- Dendrites are the branched extensions of a neuron that receive signals from other neurons.
- Dendrites play a crucial role in receiving and integrating information from other neurons.
- The axon of a nerve cell is surrounded by a myelin sheath that provides electrical insulation, ensuring efficient signal transmission.
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Description
Test your understanding of the structure and function of nerve cells in this engaging quiz. You'll explore important components such as the myelin sheath and axons, as well as the overall significance of each part. Perfect for students studying biology or neuroscience.
