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E6:
Liver. Ductus venosus. Cardio-oesophageal junction
(cf. E5). Inferior vena cava.
E7:
Stomach body, with mucosa, submucosa and muscularis
externa. Lesser sac. Lesser
omentum. Pyloroduodenal junction. Folded
duodenal mucosa. Inferior vena cava. Portal vein.
Hepatic ducts. Gallbladder.
Fl:Stomach
body. Spleen. Pyloric canal. Duodenum. Portal vein.
Pancreas. Small intestine loop (jejunum) cut
tangentially, ventral to liver.
F2,F3:
Stomach, spleen. Superior mesenteric artery.
Superior mesenteric vein crossing cranial to body
of pancreas. Tail of pancreas. Duodenum. Small
intestinal loop herniating from abdominal cavity
into the coelom of the umbilical cord (remnant of
extra-embryonic coelom).
F4:
Greater curvature of stomach (tangential section).
Lesser sac. Greater omentum. Duodenal/jejunal
junction. Note colon (small lumen, darkly-staining
wall) and its mesocolon. Note the sections of small
and large intestine within the umbilical cord
coelom and their mesenteries. Note the thickened
jelly to one side of the umbilical cord, containing
umbilical vein and R umbilical artery.
F5:
Lesser sac. Greater omentum. Duodenum. Jejunum (cut
twice with mesentery in between). Colon and
mesocolon.
F6:
Both umbilical arteries now inside abdominal cavity
with urachus between them. Greater omentum and
lesser sac. Jejunum with mesentery. Colon with
mesocolon. Three layers of abdominal muscles.
F7:
Umbilical cord containing umbilical arteries and
small dark allantois. Umbilical cord
coelom containing mainly, small intestinal loops
with their mesentery. In abdominal cavity:
colon with mesocolon, jejunum. Greater omentum
and lesser sac.
G1,G2:
Umbilical cord and coelom containing small
intestine loops. Knees. Bladder with
umbilical arteries either side. Colon and
mesocolon. Jejunum (G1 only).
G3:
Bladder. Rectum. Umbilical arteries arising from
common iliac arteries.
G4:
Rectum.
G5:
Recto-anal junction with rectovesical pouch of
peritoneal cavity.
G6-G7:
Anal canal with triangular lumen.
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