Tension in axons is essential for synaptic signaling, researchers report
pa href="http://feedads.g.doubleclick.net/~a/f2CJnae9Xt6hwlJo0jHgNL21iIE/0/da"img src="http://feedads.g.doubleclick.net/~a/f2CJnae9Xt6hwlJo0jHgNL21iIE/0/di" border="0" ismap="true"/img/abr/
a href="http://feedads.g.doubleclick.net/~a/f2CJnae9Xt6hwlJo0jHgNL21iIE/1/da"img src="http://feedads.g.doubleclick.net/~a/f2CJnae9Xt6hwlJo0jHgNL21iIE/1/di" border="0" ismap="true"/img/a/pEvery time a neuron sends a signal -- to move a muscle or form a memory, for example -- tiny membrane-bound compartments, called vesicles, dump neurotransmitters into the synapse between the cells. Researchers report that this process, which is fundamental to the workings of the nervous system, relies on a simple mechanical reality: Tension in the axon of the presynaptic neuron is required.img src="http://feeds.feedburner.com/~r/BrainMysteries/~4/Xfr8xj68KxM" height="1" width="1"/