VAN 211: Veterinary Histology and Embryology (2+2)

DIGESTIVE SYSTEM

• The digestive tube consists of an internal tube of endoderm which is the primary tissue that becomes the epithelial lining and an investing layer of splanchnic mesoderm that specializes into the connective tissue, muscle and peritoneum.
• The primitive gut is made up of three portions, the foregut, midgut and hindgut.
• The cranial part of the foregut forms the oesophagus and the caudal part of the foregut forms the descending duodenum.
• The midgut develops into ascending duodenum, jejunum, ileum, caecum, ascending and transverse colon.
• The hindgut differentiates into decending colon and rectum.