
Neuron action potentials: The creation of a brain signal
Action potentials (those electrical impulses that send signals around your body) are nothing more than a temporary shift (from negative to positive) in the neuron’s membrane potential caused …
Depolarization, hyperpolarization & neuron action potentials …
In neurons, the cell enters a state of hyperpolarization immediately following the generation of an action potential. While hyperpolarized, the neuron is in a refractory period that lasts roughly 2 …
The synapse (article) | Human biology | Khan Academy
Learn about synapses, the connections between neurons in the nervous system, and how they transmit signals efficiently on Khan Academy.
Overview of neuron structure and function - Khan Academy
A single neuron can’t do very much by itself, and nervous system function depends on groups of neurons that work together. Individual neurons connect to other neurons to stimulate or inhibit …
Signal propagation: The movement of signals between neurons
Each vesicle packet released from the pre-synaptic neuron will contain a set amount of neurotransmitters, which will then bind to some of the receptors on the post-synaptic cell. If the …
Neurotransmitters and receptors (article) | Khan Academy
When neurotransmitters bind to receptors, those receptors become activated. Activated receptors would open or close ion channels, which would affect the membrane potential of the …
Neuron action potential mechanism (video) | Khan Academy
The reason for this part of the action potential, which is called the falling phase, is because potassium starts to exit the neuron and it does so through a couple of types of channels. The …
Neuromuscular junction, motor end-plate (video) | Khan Academy
How do neurons talk directly to muscle cells? Learn about how a neuronal message is translated into a muscular action at the neuromuscular junction. By Raja Narayan.
The synapse (article) | Human biology | Khan Academy
At the synapse, the firing of an action potential in one neuron—the presynaptic, or sending, neuron—causes the transmission of a signal to another neuron—the postsynaptic, or …
Potencjał czynnościowy neuronu (film) | Khan Academy
Potencjał spoczynkowy neuronu Potencjał spoczynkowy neuronu - mechanizm działania Neuron graded potential description Neuron graded potential mechanism Potencjał czynnościowy …