Here is a model of a synapse:

http://kvhs.nbed.nb.ca/gallant/biology/synapse.jpg

Here is an actual electron image of a synapse:

http://au.encarta.msn.com/encnet/refpages/RefMedia.aspx?refid=121628228&artrefid=781566624&sec=-1&pn=1

syn·apse (sÄ­n’ăps, sÄ­-năps’)

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[Greek sunapsis, point of contact, from sunaptein, to join together, sun-, syn-, + haptein, to fasten.]

noun

The junction across which a nerve impulse passes from an axon terminal to a neuron, muscle cell, or gland cell.

intransitive verb: -apsed, -aps·ing, -aps·es.

To form a synapse.

To undergo synapsis.