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Formatting Tips - Khan Academy
WEBWatch how neurons communicate with each other through chemical signals at the synapse. Khan Academy offers a free, world-class education for anyone, anywhere.
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Neuron action potential description - Khan Academy
WEBNeuron action potentials play a crucial role in transmitting information over long distances. The all-or-none property of action potentials and the speed-enhancing function of myelin sheaths are key aspects of this process.
可汗学院 - Khan Academy
WEBin this video I want to talk about the structure of the synapse synapses are where neurons contact and communicate with their target cells and the word synapse comes from Greek words meaning to clasp together so let me start by showing where synapses happened so first I'll draw the soma of the neuron and read and a few dendrites these branching ...
Saltatory conduction in neurons - Khan Academy
WEBNow that we know how a signal can spread through a neuron, through an electrotonic potential and action potential and combinations of the two, let's put it all together by looking again at the structure of a neuron, the anatomy of a neuron, and thinking about why it has that anatomy and how it all can work.
Anatomy of a neuron (video) | Khan Academy
WEBNeurons are composed of three main parts: dendrites, a cell body, and an axon. Signals are received through the dendrites, travel to the cell body, and continue down the axon until they reach the synapse (the communication point between two neurons).
Synapsy (artykuł) | Neuron i układ nerwowy | Khan Academy
WEBIstnieje mała przerwa pomiędzy zakończeniem aksonu neuronu presynaptycznego a błoną komórki postsynaptycznej. Tą przerwę nazywamy szczeliną synaptyczną. Kiedy potencjał czynnościowy, czyli impuls nerwowy, osiąga zakończenie aksonu, aktywuje kanały wapniowe w błonie komórkowej.
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Neuronal synapses (chemical) (video) | Khan Academy
WEBHow one neuron can stimulate (or inhibit) another neuron at a chemical synapse. Skip to main content ... Q & A: Neuron depolarization, hyperpolarization, and action potentials. Overview of the functions of the cerebral cortex. Science > Biology archive > Human biology > The neuron and nervous system