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Embryology: Folding of Fetal Membranes

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Questions and Answers

What is the result of cranial folding during cephalocaudal folding of the embryo?

Incorporation of yolk sac into the embryo as hindgut

Development of the forebrain beyond oropharyngeal membrane (correct)

Formation of the urinary bladder and rectum

Rapid growth of somites

What is the process of converting the flat trilaminar disc into a cylindrical embryo called?

Longitudinal conversion

Embryonic transformation

Lateral folding

Cephalocaudal folding (correct)

During which week does the folding of the embryo typically end?

End of 3rd week (correct)

End of 2nd week

Start of 4th week

Mid of 5th week

What contributes to lateral folding of the embryo to form a cylindrical shape?

Rapid growth of somites Signup and view all the answers

What is formed as a result of tail folding during cephalocaudal folding of the embryo?

Cloaca (primordium of urinary bladder and rectum) Signup and view all the answers

What is the fate of the allantois?

Develops from the caudal part of the yolk sac Signup and view all the answers

What is the function of the vitelline vessels?

Gives rise to the superior mesenteric artery, portal and hepatic veins Signup and view all the answers

What is the result of lateral folding during embryonic development?

The embryo acquires its characteristic form Signup and view all the answers

What is the communication between the midgut & yolk sac called?

Vitelline duct Signup and view all the answers

What causes congenital umbilical faecal fistula?

Persistence of the vitello-intestinal duct Signup and view all the answers