Lecture 40 - Carnivore Foregut

Question 1

what organs are in the foregut

Answer 1

1. esophagus
2. stomach
3. descending duodenum
4. liver
5. pancreas

Question 2

what supplies the foregut with blood

Answer 2

celiac a.

Question 3

what organs are in the midgut

Answer 3

1. descending duodenum
2. transverse/ascending duodenum
3. jejunum
4. ileum
5. cecum
6. ascending/ transverse colon

Question 4

what supplies the midgut with blood

Answer 4

cranial mesenteric a.

Question 5

what organs are in the hindgut

Answer 5

1. descending colon
2. rectum
3. lining of bladder/urethra

Question 6

what supplies the hindgut with blood

Answer 6

caudal mesenteric a.

Question 7

what is the embryonic connecting peritoneum

Answer 7

1. dorsal mesentery
2. ventral mesentery

Question 8

what does the dorsal mesentery give rise to in the adult

Answer 8

1. greater omentum
2. mesoduodenum
3. mesojejunum
4. mesoileum
5. mesocolon

Question 9

what does the ventral mesentery give rise to in the adult

Answer 9

1. lesser omentum
2. falciform l.
3. median l. of the bladder

Question 10

the septum transversum becomes the

Answer 10

diaphrgam

Question 11

the visceral and parietal peritoneum have ___ layer

Answer 11

1

Question 12

what are the boundaries of the liver

Answer 12

dorsal = thoracolumbar vert.
ventral = sternum
cranial = diaphragm
caudal = stomach

Question 13

what are the lobes of the liver

Answer 13

1. right lateral
2. right medial
3. quadrate
4. left medial
5. left lateral
6. caudate

Question 14

what two structures does the caudate liver lobe have

Answer 14

1. caudate process
2. papillary process

Question 15

where is the falciform ligament

Answer 15

between left medial and quadrate lobe

Question 16

where is the gallbladder

Answer 16

bile storage between right medial and quadrate lobes

Question 17

what is the hepatic portal v.

Answer 17

delivers nutrient rich blood from GI tract, pancreas, and spleen to liver for processing

Question 18

what is the organization of the stomach

Answer 18

1. cardia (inlet; left)
2. fundus (left)
3. pylorus (outlet; right)
4. greater curvature (caudal)
5. lesser curvature (cranial)

Question 19

what is the function of the spleen

Answer 19

stores RBCs

Question 20

T/F: the spleen is relatively fixed dorsally to the left wall but is free to move ventrally

Answer 20

TRUE

Question 21

what are the 3 parts of the duodenum

Answer 21

1. descending
2. caudal duodenal flexure [transverse]
3. ascending

Question 22

what supplies the duodenum with blood

Answer 22

cranial pancreaticoduodenal a.

Question 23

describe the organization of the pancreas

Answer 23

1. right - mesenestery of descending duodenum
2. left - deep leaf of greater omentum
3. body - unites the 2 lobes adjacent to the pylorus

Question 24

what 3 ducts are associated with the duodenum

Answer 24

1. common bile duct
2. pancreatic duct
3. accessory pancreatic duct

Question 25

what empties into the major duodenal papilla

Answer 25

common bile + pancreatic

Question 26

what empties into the minor duodenal papilla

Answer 26

accessory pancreatic

Question 27

what are the 3 steps to growth and rotation of the foregut

Answer 27

1. Differential growth (dorsal grows faster, creating curvatures) 2. 90* rotation to the left around the longitudinal axis for foregut (dorsal = left, ventral = right) 3. cranio-caudal rotation of the stomach (cranial = left, caudal = right)

Question 28

what are the branches of the celiac a.

Answer 28

left gastric a. hepatic a. splenic a.

Question 29

hepatic a.

Answer 29

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.)

Question 30

splenic a.

Answer 30

first branches to spleen and pancreas --> left greater curvature (left gastroepiploic a.) --> fundus (short gastric a.)