Abdomen Nerves, Veins, Arteries Lecture Flashcards
Abdominal aorta-3 unpaired visceral branches
celiac a
cranial mesenteric a
caudal mesenteric a
3 celiac branches
splenic a
hepatic a
left gastric a
General distribution of celiac artery
Liver
stomach
pancreas
spleen
4 quadrant blood supply of stomach
Left gastric artery
Right gastric artery
Left gastroepiploic artery
Right gastroepiploic artery
What arteries run off the lesser curvature of stomach and anastomose
Left and Right gastric a
What arteries run off the greater curvature of stomach and anastomose
L gastroepiploic a
R gastroepiploic a
What part of the stomach is the left gastric artery on
Body of stomach
Lesser curvatur
“stitches”
What part of stomach is right gastric artery on
Pylorus of stomach
Lesser curvature
“longitudinal”
What part of stomach is right gastroepiploic on
Pylorus/descending duodenum
Greater curvature
“longitudinal”
What part of stomach is left gastroepiploic on
Body of stomach
Greater curvature
“longitudinal”
What are the branches of the hepatic artery and where are they
Right gastric artery (lesser curvature)
Gastroduodenal artery (duodenum)
Gastroduodenal artery divides into (2) and where are they
Right gastroepiploic artery (greater curvature)
Cranial pancreaticoduodenal artery (pancreas and cranial duodenum
What are the branches of the cranial mesenteric artery (5)
ileocolic and colic (share common trunk) artery
Middle colic artery
Right colic artery
Caudal pancreaticoduodenal artery
Jejunal artery
What does the cranial mesenteric artery supply (8)
Pancreas
Duodenum
Jejunum
Ileum
Cecum
Ascending colon
Transverse colon
Proximal part of descending colon
Cranial mesenteric a. gives rise to how many jejunal arteries?
12-15
Caudal mesenteric a branches into
Left colic
Cranial rectal
Paired arteries (5)
Lumbar a
Phrenicoabdominal a
Renal a
Gonadal a
Deep circumflex iliac
Gonadal vein drainage
R testicular/ovarian drains into caudal vena cava
L testicular/ovarian vein drains into left renal vein
Splanchnic nerves: pregang or postgang
preganglionic sympathetic nerve fibers from sympathetic trunk
Where is splanchnic nerve synapse in ganglia
celiaco-mesenteric ganglion and plexus
Two abdominal ganglia
Celiaco-mesenteric ganglion
Caudal mesenteric ganglion
Celiaco-mesenteric ganglion and plexus
-Where?
Surrounds celiac artery and cranial mesenteric artery and consists of:
left celiac ganglion
Right celiac ganglion
cranial mesenteric ganglion
Most plexuses are:
postganglionic sympathetic and preganglionic parasympathetic
Sympathetic path to abdominal viscera
Major and minor splanchnic nerves to celiacomesenteric ganglion and plexus and out to viscera via plexuses which travel along blood vessels
T/F All of the “paired arteries” that originate from the abdominal aorta have satellite veins that drain directly or indirectly into the caudal vena cava
T
How must the 3 unpaired arteries supplying digestive organs and spleen drain?
Via portal vein.
Portal vein will empty into capillary beds, and blood will carry nutrients via caudal vena cava via hepatic veins
Portal veins origin and termination
Arises from capillaries in viscera
Ends in capillaries in the liver
Functions of the hepatic portal circulation
1-Carries nutrient rich blood to liver for metabolic synthesis
2-Carries blood high in ammonia and other toxic by products of digestion to the liver for detoxification
The liver receives blood from 2 main vessels
Hepatic artery (high in O2, low in nutrients)
Portal vein (low in O2, high in nutrients)
