Human Growth and Development / Unit 3 HGD 0316 short lesson, about 20 seconds
Neurons
Captions available
The idea
A neuron is a nerve cell with a cell body, an axon that carries its message, and dendrites that receive messages from other neurons.
In practice
A signal running down an axon wrapped in myelin, a fatty coating that speeds transmission.
Where people slip
Neurogenesis is the formation of new neurons, and it begins before birth.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
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