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00:03:06
https://www.youtube.com/watch?v=E_gPIg0a9lU

Resumo

TLDRThe video provides an in-depth look at neurons, the nerve cells that transmit electrical signals throughout the body. It discusses the structure of neurons, including the axon, dendrites, and myelin sheath, and explains how these components work together to facilitate communication within the nervous system. The video describes the process of signal transmission, including the role of action potentials and neurotransmitters in moving signals from one neuron to the next. It concludes by emphasizing the educational mission of the Neuron team and encourages viewer engagement.

Conclusões

  • 🧠 Neurons transmit electrical impulses in the body.
  • ⚡ The brain contains about 86 billion neurons.
  • 📬 Dendrites receive signals from other nerve cells.
  • 📡 Axons transmit signals to other nerve cells.
  • 🚀 Myelin sheath increases signal speed to 120 m/s.
  • 💡 Signals travel via action potentials initiated by the brain.
  • 🔗 Synapses are gaps between neurons for signal transfer.
  • 🧪 Neurotransmitters are chemical messengers in signal conduction.
  • 👍 Processing signals enable movements like thumb movement.
  • 🎓 The Neuron team aims to educate through the information shared.

Linha do tempo

  • 00:00:00 - 00:03:06

    The video explains what a nerve cell, or neuron, is and how it functions in transmitting electrical impulses throughout the body. The brain contains approximately 86 billion neurons that collaborate to relay signals between itself and other body parts. The structure of a neuron includes the axon, responsible for transmitting signals, and dendrites, which receive signals from other neurons. The cell body contains the nucleus, which regulates growth and development. Some neurons have a myelin sheath that enhances the speed of signal transmission, allowing signals to travel up to 120 meters per second. The process of signal transmission involves action potentials initiated by the brain, moving through nerve cells until reaching the target muscle, demonstrating the complex communication within the nervous system. The video concludes with appreciation for supporters and encourages viewers to engage by subscribing and liking.

Mapa mental

Vídeo de perguntas e respostas

  • What is a neuron?

    A neuron is a nerve cell that transmits electrical impulses within the body.

  • How many nerve cells does the brain contain?

    The brain consists of about 86 billion nerve cells.

  • What are dendrites?

    Dendrites are structures that receive signals from other nerve cells.

  • What is the axon responsible for?

    The axon transmits electrical signals from one nerve cell to another.

  • What is the myelin sheath?

    The myelin sheath is a structure that affects the speed of electrical signal transmission in nerve cells.

  • How fast can signals travel in myelinated nerve cells?

    Signals can travel as fast as 120 meters per second in nerve cells with myelin sheaths.

  • What is a synapse?

    A synapse is the gap between one nerve cell and the next.

  • What role do neurotransmitters play?

    Neurotransmitters are chemical messengers that help transmit signals between nerve cells.

  • What triggers the movement of a thumb?

    The brain initiates an action potential that travels through neurons to move the thumb.

  • What is the purpose of the Neuron team?

    The Neuron team aims to receive, process, and convey information for educational purposes.

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Legendas
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Rolagem automática:
  • 00:00:00
    Today we will discuss something special.
  • 00:00:02
    The entire Neuron team decided that this 10th video
  • 00:00:05
    will be dedicated to explaining what a nerve cell...
  • 00:00:08
    ...or a neuron is!
  • 00:00:09
    We all know that nerve cells
  • 00:00:11
    transmit electrical impulses within our body.
  • 00:00:15
    Our brain consists of about 86 billion nerve cells
  • 00:00:18
    that work together to receive and transmit signals
  • 00:00:21
    between the brain and other parts of the body.
  • 00:00:23
    But... how does it actually work?
  • 00:00:36
    First, let's start with the structure.
  • 00:00:39
    First, is the portion known as the axon.
  • 00:00:42
    This section is in charge of transmitting electrical signals
  • 00:00:45
    from one nerve cell to the next,
  • 00:00:48
    which will finish at the final destination,
  • 00:00:49
    usually an organ or muscle.
  • 00:00:51
    In addition, we also have dendrites.
  • 00:00:54
    Dendrites are structures responsible
  • 00:00:56
    for receiving signals from other nerve cells
  • 00:00:58
    such as from organs or the brain.
  • 00:01:01
    Electrical signals will travel from the dendrites
  • 00:01:03
    through the cell body.
  • 00:01:05
    The cell body contains the nucleus.
  • 00:01:08
    While the nucleus is an organelle that contains genetic material
  • 00:01:10
    and regulates the growth and development
  • 00:01:12
    of the nerve cell.
  • 00:01:13
    In addition,
  • 00:01:14
    there are many nerve cells that possess
  • 00:01:16
    a structure called the myelin sheath
  • 00:01:17
    which affects how fast the electrical signals travel
  • 00:01:20
    and pass through the nerve cells.
  • 00:01:21
    Did you know?
  • 00:01:22
    That signals in our body can travel
  • 00:01:24
    as fast as 120 meters per second
  • 00:01:26
    in nerve cells that have myelin sheaths?
  • 00:01:28
    Okay.
  • 00:01:29
    So we have a better picture of the structure of nerve cells.
  • 00:01:32
    But what about the transmission of signals?
  • 00:01:35
    For instance, how does our brain tell our thumb to move?
  • 00:01:39
    This occurs through a complex mechanism.
  • 00:01:42
    Our brain starts something called an action potential
  • 00:01:45
    which passes along the nerve cells
  • 00:01:47
    to reach the thumb and move it.
  • 00:01:49
    Our nervous system contains nerves
  • 00:01:52
    and nerves are a bundle of nerve cells or neurons.
  • 00:01:54
    Between one nerve cell to the next
  • 00:01:57
    is a gap called a synapse.
  • 00:01:59
    The travelling action potential or electricity
  • 00:02:02
    will be received by the dendrite in the first nerve cell
  • 00:02:04
    and transmitted through its body until the axon.
  • 00:02:07
    In the first few neurons or nerve cells
  • 00:02:10
    there are chemical messengers called neurotransmitters.
  • 00:02:12
    These play a role in the conduction of these signals
  • 00:02:15
    from one nerve cell to the next.
  • 00:02:17
    Neurotransmitters are released into the synapse
  • 00:02:20
    and generate an action potential in the second nerve cell.
  • 00:02:22
    Here, the electricity will be passed to the next nerve.
  • 00:02:27
    And so on until the last nerve cell
  • 00:02:29
    conveys the electricity to the target muscle in the thumb.
  • 00:02:32
    As a result,
  • 00:02:33
    our thumb is able to move.
  • 00:02:35
    This process inspired us to name ourselves Neuron.
  • 00:02:38
    It's our hope that we can receive information,
  • 00:02:40
    process it
  • 00:02:41
    and convey it to all of you
  • 00:02:43
    for the purpose of education.
  • 00:02:45
    We would like to thank all of you
  • 00:02:47
    who have always supported us during this time
  • 00:02:49
    and to also wish a warm welcome
  • 00:02:50
    to all new viewers who have just joined us on this journey.
  • 00:02:53
    So… has your brain triggered your hands
  • 00:02:57
    to hit the subscribe and like buttons?
Etiquetas
  • Neuron
  • Nerve cell
  • Electrical impulses
  • Dendrites
  • Axon
  • Myelin sheath
  • Signal transmission
  • Neurotransmitters
  • Action potential
  • Nervous system