es ▁as ▁well ▁as ▁a ▁compreh ensive ▁activity ▁program ▁every ▁day ▁at ▁low ▁cost . ▁ ▁Currently ▁there ▁are ▁three ▁Summer ▁University ▁types : ▁the ▁Summer ▁Cour se , ▁the ▁Summer ▁Cour se ▁Plus ▁and ▁the ▁Tra v elling ▁Summer ▁University . ▁ ▁References ▁ ▁External ▁links ▁ ▁Summer ▁University ▁Project ▁website ▁ ▁A E GE E . org ▁- ▁A E GE E ▁main ▁website ▁ ▁Description ▁and ▁reviews ▁of ▁all ▁S Us ▁between ▁ 1 9 9 7 ▁and ▁ 2 0 0 5 ▁ ▁The ▁A E GE E an ▁- ▁A E GE E ' s ▁online ▁magazine ▁ ▁Les ▁An ci ens ▁al umn i ▁association ▁ ▁Category : Organ izations ▁established ▁in ▁ 1 9 8 8 ▁Category : Y outh ▁organizations ▁based ▁in ▁Europe <0x0A> </s> ▁In ▁an atom y , ▁extension ▁is ▁a ▁movement ▁of ▁a ▁joint ▁that ▁increases ▁the ▁angle ▁between ▁two ▁b ones ▁or ▁body ▁surfaces ▁at ▁a ▁joint . ▁Ext ension ▁usually ▁results ▁in ▁straight ening ▁of ▁the ▁b ones ▁or ▁body ▁surfaces ▁involved . ▁For ▁example , ▁extension ▁is ▁produced ▁by ▁extending ▁the ▁flex ed ▁( b ent ) ▁el bow . ▁ ▁Stra ight ening ▁of ▁the ▁arm ▁would ▁require ▁extension ▁at ▁the ▁el bow ▁joint . ▁If ▁the ▁head ▁is ▁t ilt ed ▁all ▁the ▁way ▁back , ▁the ▁neck ▁is ▁said ▁to ▁be ▁extended . ▁ ▁Mus cles ▁of ▁extension ▁ ▁Upper ▁lim b ▁of ▁arm ▁at ▁shoulder ▁Ax illa ▁and ▁Should er ▁Lat iss im us ▁D