FACTOID #151: The five countries with the highest coffee consumption are also the five countries whose citizens trust one another the most. Coincidence? Probably.
Galia is a municipality in the state of São Paulo in Brazil. Its coordinates are 22° 17′ 29″ S 49° 33′ 10″ W (http://kvaleberg.com/extensions/mapsources/index.php?params=22_17_29_S_49_33_10_W_region:BR). The population in 2004 is 7,364, the area is 356.73 km² The elevation is 561 m. São Paulo is a state in Brazil. ... This article is about longitude and latitude; see also UTM coordinate system Map of Earth showing lines of latitude (vertically) and longitude (horizontally); large version (pdf) The geographic (earth-mapping) coordinate system expresses every horizontal position on Earth by two of the three coordinates of a spherical coordinate system which... 2004 is a leap year starting on Thursday of the Gregorian calendar. ...
BY WILLIAM A. Once dismissed as mere padding, cells known as glia may be essential for the correct wiring of the brain, according to a study reported by two School of Medicine researchers in the Sept. 12 Science.
Glia at synapses act both as a physical barrier that prevents crossed wires and as a disposal unit that mops up extra messenger molecules released by nerve cells.
Barres said glia are almost certainly needed for the formation of strong synapses as the brain develops, but the importance of this effect in the intact brain has yet to be demonstrated.
Glia have important developmental roles, guiding migration of neurons in early development, and producing molecules that modify the growth of axons and dendrites.
The only notable differences between neurons and glia, by modern scrutiny, are the ability to generate action potentials and the polarity of neurons, namely the axons and dendrites which glia lack.
Though not technically glia because they are derived from hemopoietic precursors rather than ectodermaltissue, they are commonly categorized as such because of their supportive role to neurons.
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