At about the 10th week of embryonic development the pouch forms by adhesion of the pharyngeal ectoderm to the cranial end of the notochord become closed at the orifice or crusts adhere to the orifice without closing.
This become closed at the orifice or crusts adhere to the orifice without closing. At about the 10th week of embryonic development, the pharyngeal pouch forms by adhesion of the pharyngeal ectoderm to the cranial end of the notochord.
At about the 10th week of embryonic development, the pharyngeal pouch forms by adhesion of the pharyngeal ectoderm to the cranial end of the notochord. This become closed at the orifice or crusts adhere to the orifice without closing.
At about the 10th week of embryonic development, the pharyngeal pouch forms by adhesion of the pharyngeal ectoderm to the cranial end of the notochord. This become closed at the orifice or crusts adhere to the orifice without closing.