17 Questions
During which stage does the midgut undergo herniation, rotation, and retraction?
Embryonic stage
Which part of the gut tube develops from the oropharyngeal membrane to the respiratory diverticulum?
Esophagus
What is the origin of the enteric nervous system in the GI tract?
Ectoderm
Which structure extends from the lower end of the esophagus to the cloaca?
Dorsal mesentery
What part of the gut tube develops from the left third of the transverse colon to the cloacal membrane?
Hindgut
Which layer of the GI tract gives rise to the epithelial lining of the digestive tract?
Endoderm
Which structure forms from the connection between the hepatic bud and the foregut?
Bile duct
During the 4th week, what causes the stomach to appear as a fusiform dilation of the foregut?
Rotation around a longitudinal axis
What is responsible for the development of hematopoietic cells, Kupffer cells, and connective tissue cells in the liver?
Mesoderm of the septum transversum
Where are the pancreatic islets (Langerhans) developed from?
Parenchymal pancreatic tissue
What marks the termination of the adult midgut?
Junction of the proximal two thirds of the transverse colon with the distal third
What leads to the herniation of intestinal loops into the umbilical cord during the sixth week of development?
Rapid growth of the liver
What characterizes the rotation of the primary intestinal loop?
Rotation around a longitudinal axis
What results from the rupture of the cloacal membrane at the end of the seventh week?
Development of anal opening for hindgut
What is formed by rotating around a longitudinal and an anterioposterior axis?
Duodenum
Where are hematopoietic cells, Kupffer cells, and connective tissue cells derived from?
Mesoderm of septum transversum
Which structure forms from fusion of dorsal and ventral buds?
Pancreas
Test your knowledge on the embryologic division of the gut tube, origin of GI tract structures, mesenteries classification, and development of foregut, midgut, and hindgut structures. Author: Dr. Rocha
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