lecture 15- accessory digestive organs, topography and blood supply

sparks

where is the liver primarily located

to the right of median plane

what is special about the liver

no gallbladder

cranial extent of abdominal cavity

diaphragm

caudal extent of thoracic cavity

line of pleural reflection

basal border of lungs

ribs 6, 11, and 16

what is the top blue arrow

dome of diaphragm on midline

what is the bottom blue arrow

basal border of the lungs

what is liver cover by

ribs and diaphragm

what is special about the liver locationally

it does not extend to the abdominal floor as in the dogs

what is A

crura of diaphragm

what is B

left triangular ligament of liver

what is C

right lobe

what is D

quadrate lobe

what is E

left lobe

what is F

central tendon of diaphragm

what is G

caudal vena cava

what is the opening into the omental bursa

epiploic foramen

what is the epiploic foramen bounded by

caudal vena cava and caudate lobe of liver dorsally

hepatic portal vein and pancreas ventrally

where can the small intestines become entrapped

epiploic foramen

what is this

epiploic foramen

what is the most immobile abdominal organ

pancreas w

where does the dorsal surface of the pancreas attach

to liver and right kidney

what is the ventral attachment of the pancreas

base of cecum and right dorsal colon

where is the body of the pancreas found

extends into the cranial duodenal flexure

where is the right lobe of the pancreas found

contacts descending duodenum

where is the left lobe of the pancreas found

extends toward left kidney, contacts spleen and fundus of stomach

what does the pancreas form

a ring (anuls pancreatis) around the hepatic portal vein

we are performing a liver biopsy where would this be performed

on the right side of the horse between 12th and 14th intercostal space

you decide that you horse client needs a biopsy performed. During this we know that our landmarks are to go in around the 14th intercostal space on the right side. What all structures will our needle pass through

▪ Skin

▪ Intercostal muscles

▪ Costal pleura

▪ Pleural cavity

▪ Diaphragmatic pleura

▪ Diaphragm

▪ Peritoneal cavity

▪ Liver

what is the caudodorsal border of the liver

stomach

topography of left side of liver

6th-11/12 rib

what is 2 3 and 4

2 stomach

3 liver

4 spleen

what part of the spleen might be found in the flank

caudal part

where is the parietal surface of the spleen against

internal aspect of diaphragm

what does the apex of the spleen reach to

10th or 9th rib

where is the gastrosplenic ligament found

greater curvature of stomach to spleen

where is the phrenicosplenic ligament found

attaches base of spleen to the left crus of the diaphragm

where is the renosplenic ligament found

extends from base of spleen to kidney

where is the large colon typically entrapped

in the space created between renosplenic ligament and abdominal wall

what is the star

space between renosplenic ligament and abdominal wall

supplies cranial abdominal organs

celiac artery

supplies distal portion of descending duodenum through proximal part of descending colon

cranial mesenteric artery

supplies distal part of descending colon and proximal (oral) part of rectum)

caudal mesenteric artery

what is A

celiac artery

what is B

cranial mesenteric artery

what is C

caudal mesenteric artery

supplies lesser curvature of stomach and distal esophagus

left gastric a.

supplies liver, stomach, duodenum and pancreas

hepatic a.

what are the 2 main parts of hepatic a.

right gastric a.

gastroduodenal a.

what are the parts of gastroduodenal a.

cranial pancreaticoduodenal a.

right gastroepiploic a.

what supplies the lesser curvature of stomach

right gastric a.

what supplies the duodenum and pancreas

cranial pancreaticoduodenal a.

what supplies the greater curvature of stomach

right gastroepiploic a.

what supplies the spleen and stomach

splenic a.

what is the branch off splenic a.

left gastroepiploic a.

what supplies the greater curvature of stomach

left gastroepiploic a.

branches of cranial mesenteric a.

▪ Caudal pancreaticoduodenal a.

▪ Jejunal aa.

▪ Ileal a.

▪ Middle colic a.

▪ Right colic a.

▪ Ileocolic a

what supplies the small intestine

▪ Caudal pancreaticoduodenal a.

▪ Jejunal aa.

▪ Ileal a.

what arise from common trunk and supply colon

middle colic a.

right colic a.

caudal mesenteric a. branches

left colic a.

cranial rectal a.

what is A

right colic a.

what is B

colic branch of ileocolic a.

what is C

lateral and medial cecal arteries

what is D

ileocolic a.

what is E

common trunk

what is G

transition at pelvic flexure

what is F

middle colic a.

what should you use for landmarks for rectal palpation

root of mesentery at the level fo the first lumbar vertebra