Synaptic Terminals (Axon Terminals)
An area at the end of an that contains .
About Neurons and Synapses
The basic working unit of the is a called a . The human contains about 100 billion . A neuron consists of a containing the , and special extensions called (pronounced AK-sonz) and (pronounced DEN-drahytz).
communicate with each other using and . When a receives a message from another neuron, it sends an electrical signal down the length of its . At the end of the axon, the electrical signal is converted into a chemical signal, and the axon releases chemical messengers called (pronounced noor-oh-TRANS-mit-erz).
The are released into the space between the end of an and the tip of a from another . This space is called a (pronounced SIN-aps). The neurotransmitters travel the short distance through the synapse to the dendrite. The dendrite receives the neurotransmitters and converts them back into an electrical signal. The signal then travels through the neuron, to be converted back into a chemical signal when it gets to neighboring .