Embryology of the GIT II - Midgut (Easy to Understand)

The development of the midgut explained very simply!

If you are completely new to embryology and you want to understand it quickly, this should be the first video you watch:
-    • Introduction to Embryology - Fertilis...  

Post any questions you have about the video below, I read all the comments:

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Summary for your notes:
- midgut communicates with the yolk sac with the vitelline duct (yolk stalk)
- midgut begins in the grown human distal to the entrance of the bile duct into the duodenum, until the junction between the proximal 2/3 of the transverse colon and the distal 1/3.
- midgut is supplied by superior mesenteric artery]
- midgut rapidly elongates forming a primary intestinal loop
- cephalic limb of the loop becomes the distal duodenum, jejunum, and some of the ileum
- caudal portion becomes the rest of the ileum, caecum, appendix, ascending colon, and proximal 2/3 of the transverse colon
- the midgut rotates 90 degrees during physiological herniation (counter-clockwise)
- when the intestinal loops retract into the abdominal cavity due to liver growth declining and an increased cavity, the midgut rotates another 180 degrees
- initially the cecum is in the right upper quadrant (RUQ), but it descends into the iliac fossa (RIF)

Abnormalities:
- gastroschisis, Meckel's diverticulum (persitence of the vitelline duct), volvulus (malrotation: only 90 degrees instead of 270, leading to bowel being retracted first and therefore being on the left side), atresia and stenosis