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Overview         (For age - group : Above 16 )

Animated Neuronal transmission : It is one of the most important function of the body. What we call our senses are impulses travelling from various parts of the body to brain. Unknow to us however there are billions of connections made to transfer info from internal organs to the brain. It is the intricate neuron cellular network that keeps our body alive. This neuronal transmission animation gives in-depth information about how our nervous system functions.

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Duration (hr:min:sec) 0:35:0
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Neuronal transmission

Category : Human Body
Type : Animation
Animation Type : Advanced
Total animation length: 35 minutes

The animation covers:

  • What is brain made up of?
  • What is the structure of neuron?
  • Axon and their function
  • How information transfers through neuron?
  • How do neurons, a biological entity, create an electric signal?
  • What is action potential?
  • Complete mechanism of action potential generation and transfer including Na - K interaction
  • How electric signal pass through one neuron to another neuron, as there is tiny gap between two neurons?
  • Complete mechanism of presynaptic terminal to postsynaptic membrane signal transfer
  • What are neurotransmitters?

More about blood in explanatory notes:

  1. The different parts of brain :
    (1) the cerebrum,(2) the cerebellum, and (3) the brain stem.
  2. Spinal cord and diencephalon
  3. Comparison of Brain and Body Sizes of Various Animals
  4. Is sleep correlated to the brain? Does your brain sleep when you sleep?
  5. Why is the brain so soft?
  6. What protects the soft brain?


Brain Strucutre

Electric signal or action potential

Postsynaptic cell

Nerve fiber

Action potential is transmitted through neuron

Chemical mechanism behind action potential

Nerve cells and signal transfer


Acetylcholine mechanism in synaptic cleft
Details of the animation/ movie /software

Brain cell (neuron)

The human brain contains more than 100 billion brain cells called nerve cells or neurons. All neurons have same basc structure. Many number of nerves cells together are called nerve. Nerve is a pale, tough and string like structure and acts as a living telephone wire.
A neuron is a long cell that has a thick central area containing the nucleus; it also has one long structure called an axon and one or more short, bushy structures called dendrites. Dendrites receive impulses from other neurons. These impulses propagate electrically along the cell membrane to the end of the axon. At the tip of the axon the signal is chemically transmitted to an adjacent neuron or muscle cell.

When the electrical signal (action potential) reaches the tip of an axon, it stimulates small presynaptic vesicles in the cell.

These vesicles contain chemicals called neurotransmitters, which are released into the microscopic space between neurons (the synaptic cleft). The neurotransmitters is attached to specialized receptors on the surface of the adjacent neuron. This stimulus causes the adjacent cell to depolarize and propagate an action potential of its own. The duration of a stimulus from a neurotransmitter is limited by the breakdown of the chemicals in the synaptic cleft and the re-uptake by the neuron that produced them. Formerly, each neuron was thought to make only one transmitter, but recent studies have shown that some cells make two or more.

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