Physiologic herniation starts and ends in which timeframe?

Physiologic herniation starts and ends in which timeframe?

• A. 8th week and should retract at 12th week
• B. 6th-10th week
• C. 10th-14th week
• D. 12th-16th week

Answer: (A)

During early development, the midgut grows so rapidly that it temporarily herniates into the umbilical cord. This physiologic herniation begins around the 8th week and the intestines return to the abdomen by about the 12th week. This timeline fits the process: the gut protrudes while the abdominal cavity is still relatively small, then retracts into the abdomen as space becomes available and the gut completes its rotation. Other ranges either start too early or end too late for the observed sequence, making the 8th–12th week window the best match for this normal developmental stage.

During early development, the midgut grows so rapidly that it temporarily herniates into the umbilical cord. This physiologic herniation begins around the 8th week and the intestines return to the abdomen by about the 12th week. This timeline fits the process: the gut protrudes while the abdominal cavity is still relatively small, then retracts into the abdomen as space becomes available and the gut completes its rotation. Other ranges either start too early or end too late for the observed sequence, making the 8th–12th week window the best match for this normal developmental stage.