Importance during neurulation paraxial mesoderm Located on both sides of axial mesoderm . Mesenchymal cells condense to somitomeres . These mature to somites . Formation of Bowman s capsule and proximal and collecting tubules. Lateral folding and craniocaudal flexion close the disk into a tube.
Pouches bulge out from pharyngeal endoderm and enclose adjacent mesoderm.
Lung forms as a diverticule from the foregut, followed by branching . Figure 14-10 Endodermal epithelium form trachea, bronchi and bronchioli. Connective tissue around these is of mesodermal origin. Branching branching requires the presence of mesenchyme around the endoderm epithelium. Lamina-free epithelium tips invaginate by microfilament contraction.