A basic unit of nerve: Synapse

A unit of nerve is joined at the unique junction named synapse to transmit data to another nerve. A synapse consists of the front part that the axon terminal swelled and the back part of in the cell body of next nerve units and in the dendrite. It is joined between the small space which is 1-2 millimeters (synaptic cleft). The transmission of excitation by synapse is a part of the transmission from the nerve fiber to the nerve cell body and does not transmit in an opposite way. There are many synaptic vesicles that include acetylcholines and mitochondria in the synaptic microcephaly. The transmission of excitation is done by the substance of the transmitting excitation (in case of an excitatory synapse ) and the substance of the transmitting inhibition (in case of an inhibition synapse ) which is secreted in a moment. These nerve transmission substances connect with receptors in the postsynaptic membrane and this stimulus excites next nerve units.

A synapse not only connects but also transmit data (excitation) to one way via transmission substances and receptors.

3.1 The structure of whole brain

3.2 Functions of cerebrum

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Modificado em: 18-01-1999