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Neurons
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9th grade
Biology
nurila_omirzak_63120
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  • Slide 1
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    Neuron

    a nerve cells

  • Slide 2
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    aim

    • you will establish the relationship between nerve cell structure and fuction;

    • analyze functions of the nervous tissue and its structural components

  • Slide 3
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    Nervous system

    controls and regulates the body

  • Slide 4
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    Nervous tissue contains two types of cells:

    • neuron (accept and conduct signals)

    • glia-neuroglia (support and protect neurons)

    • there are more glial cells than neurons

  • Question 5
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    Q.

    How many cells have in nervous tissue?

    no correct answer

    2

    3

  • Slide 6
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    NEURONS

    consists three parts (cell body, dendrite, axon)

  • Slide 7
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    Neuron

    • body (contains most of cell organelles and nucleus)

    • dendrite (short projection of neuron, it receives the nerve signal (information) and transfers it TO the body, one neuron usually has many denrites)

    • axon ( long projection, it send information AWAY from the body, a neuron has only one axon)

  • Question 8
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    Q.

    What is the part of the neuron that brings information TO the cell body?

    answer choices

    dendrite

    axon

  • Question 9
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    Q.

    What is the part of the neuron that takes information AWAY from the cell body?

    answer choices

    dendrite

    axon

  • Slide 10
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    Functionally neurons can be divided into 3 groups

    • Sensory neurons ( receive signals from sensory organs and carry it to the nervous system)

    • Interneurons (they are in the brain and spinal cord, they receive signals from sensory neurons and give them to motor neurons)

    • Motor neurons (take signals from interneurons and send them to effector cells(mostly muscle cells)

  • Question 11
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    Q.

    Give an example for sensory organs?

  • Question 12
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    Q.

    Which type of neurons are located in brain?

    answer choices

    Sensory neurons

    Interneurons

    Motor neurons

  • Slide 13
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    2 types of axon

    • Myelinated axons are covered by myelin protein. they conduct information faster

    • Unmyelinated axons are not covered by myelin protein. they conduct information slowly

  • Slide 14
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    synapse

    connection between two neurons

    ................................

    permits a neuron  to pass a signal to another neuron

  • Slide 15
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    neurotransmitters

    information passes from one neuron to another through special molecules

    .....................

    AXON produces neurotransmitters

  • Question 16
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    Q.

    Did you understand today's topic?

    no correct answer

    Yes

    No

  • Slide 17
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    (141) What are Nerve Cells, Neurons & Synapses? | Physiology | Biology | FuseSchool - YouTube

  • Slide 18
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    feedback

    slido.com

    #biology7

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