News tagged with synapses
Related topics: brain , nerve cells , neurons , protein , memory
Chemical synapses are specialized junctions through which neurons signal to each other and to non-neuronal cells such as those in muscles or glands. Chemical synapses allow neurons to form circuits within the central nervous system. They are crucial to the biological computations that underlie perception and thought. They allow the nervous system to connect to and control other systems of the body.
The adult human brain is estimated to contain from 1014 to 5 × 1014 (100-500 trillion) synapses. Each mm3 of cerebral cortex contains roughly a billion of them.
The word "synapse" comes from "synaptein", which Sir Charles Scott Sherrington and colleagues coined from the Greek "syn-" ("together") and "haptein" ("to clasp"). Chemical synapses are not the only type of biological synapse: electrical and immunological synapses also exist. Without a qualifier, however, "synapse" commonly means chemical synapse.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
(Medical Xpress)—When brain cells are overwhelmed by an influx of too many calcium molecules, they shut down the channels through which these molecules enter the cells. Until now, the "stop" signal mechanism that cells ...
Neuroscience May 09, 2013 | 5 / 5 (4) | 0 |
Alzheimer's disease is characterized by the accumulation of neurotoxic β-amyloid peptide (A-beta). ADAM10, a protein that resides in the neural synapses, has previously been shown to prevent the formation of A-beta.
Alzheimer's disease & dementia May 08, 2013 | not rated yet | 0
Using spinning disk microscopy on barely day-old zebra fish embryos, University of Oregon scientists have gained a new window on how synapse-building components move to worksites in the central nervous system.
Neuroscience Apr 18, 2013 | 4 / 5 (1) | 0 |
(Medical Xpress)—Using the fruit fly as a model organism, neurobiologists from the Friedrich Miescher Institute for Biomedical Research have identified the L1-type CAM neuroglian as an important regulator ...
Neuroscience Apr 25, 2013 | 5 / 5 (1) | 0 |
A study in The Journal of General Physiology presents new methods to evaluate how astrocytes contribute to brain function, paving the way for future exploration of these important brain cells at unprecede ...
Medical research Apr 29, 2013 | not rated yet | 0