Trachea to prevent swallowed matter from entering the trachea. In the fourth week of development of the human embryo as the respiratory bud grows, the trachea separates from the foregut through the formation of tracheoesophageal ridges which fuse to form the tracheoesophageal septum and this separates the future trachea from the oesophagus and divides the foregut tube into the laryngotracheal tube. Before the end of the fifth week, the trachea begins to develop from the laryngotracheal tube which develops from the laryngotracheal groove. The first part of the cephalic region of the tube forms the larynx, and the next part forms
Is This What You Want? the Walrus",<ref name="Staunton/RM 04">Terry Staunton, "Jackie Lomax: "Is This What You Want?"", "Record Collector", July 2004; available at Rock's Backpages (subscription required; retrieved 31 October 2012).</ref> and, conversely, pre-empting the similar-sounding "Come Together" by a full year.<ref name="Unterberger/AM">Richie Unterberger, "Jackie Lomax "Is This What You Want?"", AllMusic (retrieved 31 October 2012).</ref> Recording for "Is This What You Want?" began at EMI Studios in London in June 1968 and continued through the summer in between Harrison's work on the Beatles' White Album. While working alone at Trident Studios, down the hall from where the band were recording, Lomax was invited to