▁ ▁Def ining ▁the ▁Gen re : ▁What ▁are ▁the ▁rules ▁for ▁historical ▁fiction ? ▁from ▁the ▁Historical ▁Nov el ▁Society ▁ ▁When ▁F ict ional ized ▁Fact s ▁M atter ▁- ▁Chron icle ▁of ▁High er ▁Education '' ▁article ▁on ▁the ▁fict ional ization ▁of ▁history ▁▁▁ ▁Category : Liter ary ▁gen res ▁Category : Fil m ▁gen res <0x0A> </s> ▁Vel um ▁may ▁refer ▁to : ▁ ▁Human ▁an atom y ▁ ▁Super ior ▁med ull ary ▁vel um , ▁anterior ▁med ull ary ▁vel um ▁or ▁val ve ▁of ▁Vie uss ens , ▁white ▁matter , ▁in ▁the ▁brain , ▁which ▁st ret ches ▁between ▁the ▁superior ▁c ere bell ar ▁ped un cles ▁ ▁F ren ul um ▁of ▁superior ▁med ull ary ▁vel um , ▁a ▁slightly ▁raised ▁white ▁band ▁passing ▁to ▁the ▁superior ▁med ull ary ▁vel um ▁ ▁In fer ior ▁med ull ary ▁vel um ▁or ▁posterior ▁med ull ary ▁vel um , ▁a ▁thin ▁layer ▁of ▁white ▁subst ance , ▁prolong ed ▁from ▁the ▁white ▁center ▁of ▁the ▁c ere bell um ▁ ▁Vel um ▁inter pos it um ▁or ▁ch or oid ▁p lex us , ▁a ▁structure ▁in ▁the ▁brain ▁where ▁c ere bro sp inal ▁fluid ▁is ▁produced ▁ ▁Cav um ▁v eli ▁inter pos iti , ▁a ▁condition ▁in ▁which ▁the ▁c is tern ▁of ▁the ▁vel um ▁inter pos it um ▁becomes ▁dil ated ▁ ▁Pal atal ▁vel um ▁or ▁soft ▁pal ate , ▁the ▁soft ▁t issue ▁const