Flashcards in Embryology Deck (14):
What is the foregut?
Mouth to common bile duct.
Proximal half of duodenum
What is the midgut?
Common bile duct to 2/3rds of transverse colon.
Distal half of duodenum
Right 2/3 of transverse colon
What is the hindgut?
Starts at 2/3rds of transverse colon to anal canal
Left 1/3 of transverse colon
Which artery supplies the foregut?
Which artery supplies the midgut?
Superior mesenteric artery
Which artery supplies the hindgut?
Inferior mesenteric artery
Which parts of the embryo give rise to the primitive gut?
Endoderm and visceral mesoderm
What does the endoderm give rise to?
Epithelial lining of digestive tract
Endocrine and exocrine cells of pancreas
What does the visceral mesoderm give rise to?
Which embryonic structures give rise to the pharynx and larynx?
Pharyngeal arches 1,2,3,4 & 6 (no 5)
What is a mesentery?
A double layer of peritoneum that surround an organ and connects it to the body wall.
What causes a greater and lesser curvature of the stomach?
The fact that the dorsal wall grows faster than the ventral wall.
How is the lesser sac formed?
Stomach rotates 90 degrees clockwise at 7th week, producing a space behind it = the lesser sac