▁different ▁groups . ▁Scient ists ▁are ▁currently ▁looking ▁into ▁this ▁matter ▁to ▁generate ▁a ▁more ▁complete ▁picture . ▁ ▁In ▁humans , ▁the ▁development ▁proceed s ▁differently . ▁The ▁bu cc oph ary n ge al ▁memb rane ▁is ▁created ▁in ▁the ▁for eg ut ▁and ▁it ▁is ▁per for ated ▁during ▁the ▁ 4 th ▁week ▁of ▁human ▁development , ▁creating ▁the ▁primitive ▁mouth , ▁whereas ▁the ▁clo ac al ▁memb rane ▁is ▁created ▁in ▁the ▁h ind g ut ▁and ▁it ▁is ▁per for ated ▁during ▁the ▁ 8 th ▁week ▁of ▁human ▁development , ▁creating ▁the ▁primitive ▁an us ▁after ▁the ▁mouth ▁opening ▁has ▁already ▁been ▁created . ▁ ▁See ▁also ▁Emb ry ology ▁G astr ulation ▁ ▁References ▁ ▁Category : Em b ry ology ▁of ▁dig est ive ▁system ▁Category : M outh ▁Category : Dig est ive ▁system <0x0A> </s> ▁Jen ny ▁Og wen ▁is ▁a ▁Wel sh ▁former ▁actress ▁and ▁present er . ▁She ▁is ▁best ▁known ▁as ▁a ▁weather ▁present er ▁on ▁the ▁Wel sh - language ▁channel ▁S 4 C . ▁ ▁Biography ▁ ▁Early ▁life ▁Og wen ▁was ▁born ▁in ▁L land y bie , ▁in ▁Car mar th ens hire . ▁Her ▁family ▁moved ▁to ▁Cry my ch ▁in ▁P embro kes hire ▁when ▁she ▁was ▁two ▁years ▁old . ▁In ▁her ▁te en age ▁years ▁she ▁was ▁crown ed ▁Miss ▁P embro kes hire ▁ 1 9 6 1 ▁and ▁won ▁the ▁title ▁of ▁Miss ▁Nor vic ▁Te en ager ▁of