Lecture 40 - Carnivore Foregut Flashcards
what organs are in the foregut
- esophagus
- stomach
- descending duodenum
- liver
- pancreas
what supplies the foregut with blood
celiac a.
what organs are in the midgut
- descending duodenum
- transverse/ascending duodenum
- jejunum
- ileum
- cecum
- ascending/ transverse colon
what supplies the midgut with blood
cranial mesenteric a.
what organs are in the hindgut
- descending colon
- rectum
- lining of bladder/urethra
what supplies the hindgut with blood
caudal mesenteric a.
what is the embryonic connecting peritoneum
- dorsal mesentery
- ventral mesentery
what does the dorsal mesentery give rise to in the adult
- greater omentum
- mesoduodenum
- mesojejunum
- mesoileum
- mesocolon
what does the ventral mesentery give rise to in the adult
- lesser omentum
- falciform l.
- median l. of the bladder
the septum transversum becomes the
diaphrgam
the visceral and parietal peritoneum have ___ layer
1
what are the boundaries of the liver
dorsal = thoracolumbar vert.
ventral = sternum
cranial = diaphragm
caudal = stomach
what are the lobes of the liver
- right lateral
- right medial
- quadrate
- left medial
- left lateral
- caudate
what two structures does the caudate liver lobe have
- caudate process
- papillary process
where is the falciform ligament
between left medial and quadrate lobe
where is the gallbladder
bile storage between right medial and quadrate lobes
what is the hepatic portal v.
delivers nutrient rich blood from GI tract, pancreas, and spleen to liver for processing
what is the organization of the stomach
- cardia (inlet; left)
- fundus (left)
- pylorus (outlet; right)
- greater curvature (caudal)
- lesser curvature (cranial)
what is the function of the spleen
stores RBCs
T/F: the spleen is relatively fixed dorsally to the left wall but is free to move ventrally
TRUE
what are the 3 parts of the duodenum
- descending
- caudal duodenal flexure [transverse]
- ascending
what supplies the duodenum with blood
cranial pancreaticoduodenal a.
describe the organization of the pancreas
- right - mesenestery of descending duodenum
- left - deep leaf of greater omentum
- body - unites the 2 lobes adjacent to the pylorus
what 3 ducts are associated with the duodenum
- common bile duct
- pancreatic duct
- accessory pancreatic duct
what empties into the major duodenal papilla
common bile + pancreatic
what empties into the minor duodenal papilla
accessory pancreatic
what are the 3 steps to growth and rotation of the foregut
- Differential growth (dorsal grows faster, creating curvatures)
- 90* rotation to the left around the longitudinal axis for foregut (dorsal = left, ventral = right)
- cranio-caudal rotation of the stomach (cranial = left, caudal = right)
what are the branches of the celiac a.
left gastric a.
hepatic a.
splenic a.
hepatic a.
first branches to liver and gallbladder –> and then to right lesser curvature (gastroduodenal a.) –> right greater curvature (right gastroepiploic a.) – > proximal descending duodenum/right pancreas (pancreaticoduodenal a.)
splenic a.
first branches to spleen and pancreas –> left greater curvature (left gastroepiploic a.) –> fundus (short gastric a.)
