Introduction to neurons and glia. How the structure of a neuron allows it to receive and transmit information.

Sometimes different parts of different cells perform other functions, but these tend to be where the neuron receives its signal. And we'll talk more about what it means to receive and transmit a …

My neuroscience textbook classifies any neuron with two neurites as bipolar, and the diagram shows what you describe: the bipolar neuron has two axons going in opposite directions.

Most of your synapses are chemical synapses, meaning that information is carried by chemical messengers from one neuron to the next. In the article on synapses, we discussed how …

The membrane potential of a resting neuron is primarily determined by the movement of K + ions across the membrane. So, let's get a feeling for how the membrane potential works by seeing …

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 …

Learn about synapses, the connections between neurons in the nervous system, and how they transmit signals efficiently on Khan Academy.

Hyperpolarization is when the membrane potential becomes more negative at a particular spot on the neuron’s membrane, while depolarization is when the membrane potential becomes less …

Sometimes different parts of different cells perform other functions, but these tend to be where the neuron receives its signal. And we'll talk more about what it means to receive and transmit a …

As the action potential travels down the axon, positive ions continue to flood the cell. Eventually, this influx reaches the very end of the neuron – the axon terminal. When this happens, the …