Development of stomach

Development of stomach

• At week 4, spindle-shaped enlargement of the front intestine of the embryo,
• the shape and placement change due to the different growth rate of individual walls and the change of the position of organs in the vicinity,
• the stomach rotates 90 ° around its longitudinal axis (originally the left side ventrally, originally the right dorsally),
  • therefore, the vagus nerve also moves forward from the originally left side and backwards from the right side,
• originally the posterior wall grows faster than the anterior wall, therefore a major and minor curvature is formed,
• the cranial and caudal part also shifts from its central axis,
  • the caudal part (pylorus) moves to the right and up,
  • the cranial part (cardia) moves left and down,
• the axis of the stomach now points from top to bottom and to the right.

Congenital malformations of the stomach

• Pyloric stenosis - hypertrophy of the gastric muscle in the pyloric area,
  • one of the most common defects, probably occurs already in the fetal period,
  • restriction of digestion, severe vomiting.