DEV2022 – Lecture 13
Abdominal contents are forming outside of the body.
Formation of the gut tube lining from endoderm:
First step is to form a tube = complex folding
Formation of the gut tube from endoderm:
Somites = precursors to muscles in vertebrates
Early establishment of the primitive gut tube:
Cloaca becomes the urinary tract.
Development and rotation of the gut tube:
Length of the GI tract increases significantly, as well as the width.
Protrusion at the end of the cecum is the appendix.
Defects in rotation of the gut tube:
Because the normal development hasn’t occurred, we’re going to have a long
tube floating around which may lead to strangulation.
Smooth muscle is important for contraction to expel