Nerve Cell Labeling Quiz
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Questions and Answers

What is the primary function of the signal direction in a nerve cell?

  • To transmit signals away from the cell body (correct)
  • To support the cell's structure
  • To receive signals
  • To produce neurotransmitters
  • What are dendrites?

    Structures that receive signals from other nerve cells

    What is the cell body?

    The part of the neuron that contains the nucleus and organelles

    What is the function of the nucleus in a nerve cell?

    <p>To store genetic material and control cell activities</p> Signup and view all the answers

    What is an axon?

    <p>A long extension that transmits signals away from the cell body</p> Signup and view all the answers

    What does the myelin sheath do?

    <p>Insulates the axon to speed up signal transmission</p> Signup and view all the answers

    What are supporting cells?

    <p>Cells that provide support and protection for neurons</p> Signup and view all the answers

    What are nodes of Ranvier?

    <p>Gaps in the myelin sheath along the axon</p> Signup and view all the answers

    What are synaptic knobs?

    <p>Structures at the end of an axon that release neurotransmitters</p> Signup and view all the answers

    What is a signal pathway?

    <p>The route taken by nerve impulses to transmit information</p> Signup and view all the answers

    Study Notes

    Signal Direction

    • Refers to the way electrical impulses travel within the nerve cell.
    • Essential for the communication between neurons and other cells.

    Dendrites

    • Branch-like structures that receive signals from other neurons.
    • Increase the surface area for neurotransmitter connections.

    Cell Body

    • Contains the nucleus and organelles, coordinating the cell's activities.
    • Responsible for integrating incoming signals and determining action potential.

    Nucleus

    • Central part of the cell body housing genetic material (DNA).
    • Controls cell functions and regulates gene expression.

    Axon

    • Long, thin projection that transmits nerve impulses away from the cell body.
    • Ends in axon terminals that connect to other neurons or muscles.

    Myelin Sheath

    • Fatty layer that insulates the axon, speeding up signal transmission.
    • Formed by Schwann cells in peripheral nerves; important for rapid communication.

    Supporting Cells

    • Glial cells that provide support, nutrition, and protection for neurons.
    • Types include astrocytes, oligodendrocytes, and microglia.

    Nodes of Ranvier

    • Gaps in the myelin sheath along the axon.
    • Facilitate faster signal transmission through saltatory conduction.

    Synaptic Knobs

    • Specialized structures at the end of axons where synapses occur.
    • Contain neurotransmitters that transmit signals to other neurons or target cells.

    Signal Pathway

    • The route taken by electrical impulses as they travel through the nerve cell.
    • Includes dendrites, cell body, axon, and synaptic knobs.

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    Description

    Test your knowledge on the anatomy of nerve cells with this labeling quiz. Each card presents a different component of the neuron, allowing you to identify key parts and their functions. Perfect for students studying biology or neuroscience.

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