Elements of Chemical Synapses

When the two synaptic elements are both parts of neurons (dendrites, somata, axons), several combinations are possible, with terms to match. Thus, axoden-dritic, axosomatic, and axoaxonic synapses are recognized. These three arrangements are the "conventional'' ones dominating the field until the late 1950s.

"Unconventional" synapses (Fig. 30) were then uncovered: dendrodendritic synapses are the best known, but dendroaxonic, somatosomatic, soma-toaxonic, and axoaxodendritic (serial junctions) are described. Yet the most arresting ones are glomeruli, which are clusters of axons and dendrites (Fig. 17). These neuronal microcosms illustrate Charles Sherrington's key principles of divergence and convergence.

Breaking Bulimia

Breaking Bulimia

We have all been there: turning to the refrigerator if feeling lonely or bored or indulging in seconds or thirds if strained. But if you suffer from bulimia, the from time to time urge to overeat is more like an obsession.

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