Questions and Answers
What do dendrites do?
What is the function of the axon hillock?
Where nerve signals are generated
What does the axon do?
Carries nerve impulses away from the cell body
What are schwann cells responsible for?
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What are Nodes of Ranvier?
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What is the axon terminal?
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What does the myelin sheath do?
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Study Notes
Multipolar Neuron Components
- Dendrites: Specialized structures that receive incoming signals from other neurons, facilitating communication within the nervous system.
- Axon Hillock: Critical region where action potentials are initiated; it acts as the trigger zone for nerve signal generation.
- Axon: Long, threadlike projection of a neuron which transmits electrical impulses away from the neuron’s cell body, vital for signal propagation over distances.
- Schwann Cells: Glial cells in the peripheral nervous system that produce myelin, an insulating layer that enhances the speed and efficiency of axonal transmission.
- Nodes of Ranvier: Interruptions in the myelin sheath of the axon that enable rapid conduction of nerve impulses through the action of voltage-gated sodium channels.
- Axon Terminal: The endpoint of the axon where neurotransmitters are synthesized and released into the synaptic cleft, enabling communication with other neurons.
- Myelin Sheath: Lipid-rich layer surrounding the axon which improves the conduction velocity of electrical impulses, allowing for rapid signal transmission.
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Description
Test your knowledge on the structure of multipolar neurons with this labeling quiz. Identify key components such as dendrites, axon hillock, and schwann cells. Perfect for biology students studying the nervous system.
