Recent evidence suggests that glia may also assist in some of the signaling functions of neurons. Glia can be compared to the workers at the electric company who make sure wires go to the right places, maintain the wires, and take down wires that are broken. A neuron can be compared to an electrical wire: it transmits a signal from one place to another.
All Khan Academy content is available for free at The nervous system is made up of neurons, the specialized cells that can receive and transmit chemical or electrical signals, and glia, the cells that provide support functions for the neurons. The information below was adapted from OpenStax Biology 35.1 and Khan Academy AP Biology The neuron and nervous system. Describe the structure and function of neuronal synapses and the role of neurotransmitters at the synapse.Interpret an action potential graph and explain the molecular mechanisms underlying each step of the action potential.Describe the structure and function of neurons.
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