Biology / Unit 12 Bio 2745 short lesson, about 20 seconds
Nervous Tissue: Neurons and Glia, Introduced
Captions available
The idea
Nervous tissue is built from neurons, which receive and transmit electrical impulses, and glial cells, which support neurons by regulating their environment and forming insulation.
In practice
A neuron's dendrites receive signals while astrocytes nearby regulate the chemical environment those signals depend on.
Where people slip
Glial cells regulate signaling rather than merely support it — treating neurons as the only functional cells here is the mistake.
Your place on the trail
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Builds on
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