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- Overview of neuron structure and function - Khan Academy
Introduction to neurons and glia How the structure of a neuron allows it to receive and transmit information
- Anatomy of a neuron (video) | Human biology | Khan Academy
Neurons (or nerve cells) are specialized cells that transmit and receive electrical signals in the body Neurons 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)
- Neuron action potentials: The creation of a brain signal
Neurons are similar to other cells in that they have a cell body with a nucleus and organelles However, they have a few extra features which allow them to be fantastic at transferring action potentials:
- Signal propagation: The movement of signals between neurons
Inhibitory signals work to cancel the signal Every time an action potential is triggered in a neuron, that cell will release whatever types of neurotransmitter it has, because calcium cannot tell the difference between one vesicle and another So neurons tend to have only one type of neurotransmitter – either excitatory OR inhibitory
- Membrane potential (resting membrane potential) (article . . . - Khan Academy
In neurons, however, the resting membrane potential is close but not identical to the K + equilibrium potential Instead, under physiological conditions (conditions like those in the body), neuron resting membrane potentials are slightly less negative than the K + equilibrium potential What does that mean?
- Neurons (practice) | Nervous system | Khan Academy
Chemicals called neurotransmitters transfer information between two neurons separated by a gap These chemicals pass the information from axon terminal of the first neuron to the dendritic tip of another neuron
- Función y estructura de la neurona (artículo) | Khan Academy
Introducción a las neuronas y la glia Cómo la estructura de una neurona le permite recibir y transmitir información
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