Headward, the alimentary tube extends up in front of the notochord and initiatives above the higher A part of the body wall (tongue) and in front of and beneath the brain to hitch the epidermal despair. With the epidermal melancholy are fashioned the tooth and most of the mouth lining; https://traffic-accident-claims12233.answerblogs.com/34203127/examine-this-report-on-body-structure-size