-Trilaminar embryonic disc undergoes lateral and anterior folding
-After folding the endoderm is inside the ectoderm and the mesoderm fills the space in between.
-The digestive tract is formed. It is separated into three regions: the foregut, midgut, and hindgut.
1.Foregut: forms the primitive pharynx and throat
2.Midgut/Hindgut: form the rest of the mature pharynx and digestive tract.
-The face and neck begin to develop, as the primitive eyes, ears,nose,oral cavity, and jaw areas are developing.
-Maxillary Processes, Medial nasal processes and pits are formed.
-Median nasal processes fuse into maxillary segments to form primary palate.