Erika Bálint, M.D.

mesentery: visceral layer of the peritoneum, thatreaches the small intestines, covers them andattaches them to the posterior abdominal wall(radix mesenterii)the edge of the intestinal wall that connects withthe mesentery is called the mesenterial edge, the opposite is the antimesenterial edgethe supplying vessels and nerves of the smallintestines run within the mesentery

mesenterial edge

antimesenterialedge

Mesenterial vessels

abdominal aorta: the descending aorta from the aortic hiatus downwardsBranches:1. Parietal2. Paired visceral3. Unpaired visceral

1. inferior phrenic artery: right below theaortic hiatus on the inferior surface of thediaphragm (superior suprarenal artery)2. lumbal arteries: 4 pairs of segmentalarteries3. medial sacral artery: rudimentary inhumans

1. medial suprarenal artery: to anteriorsurface of the suprarenal glands2. renal artery (L1): to the hilum of thekidneys (inferior suprarenal artery)3. testicular artery or ovaric artery (L1):

: part of the spermatic cord, : in the suspensory ligament of the ovaries

1. coeliac trunk (Th12-L1) (tripus Halleri)2. superior mesenteric artery (L1)3. inferior mesenteric artery (2-3 fingersabove the division of the abdominal aorta)

Coeliac trunk

coeliac trunk

gastroduodenal artery

common hepatic artery

left gastric artery

right branch

right gastric arteryproper hepatic artery

pancreatic branches

left gastroepiploic artery

short gastric arteries

anastomosis

superiorpancreaticoduodenal

arteries

left branch

anastomosiscystic artery

anastomosis

splenic artery

right gastroepiploic artery

A. mesenterica superior

superior mesenteric artery

inferiorpancreaticoduodenal

arteries

ileal arteries

ileocolic arteries

right colic artery

medial colic artery

caecal arteries

appendicular artery

anastomosis

left colic artery

marginal artery of the colon(Drummond-artery)

Anastomosis of Riolan

jejunal arteries

Inferior mesenteric artery

inferior mesenteric artery

left colic artery

sigmoid arteries

sigmoid ima artery

superior rectal artery

Sudeck-point

internal iliac artery

inferior rectal artery

medial rectal artery

rectosigmoidartery

internal pudendal artery

Collects the blood of the unpaired abdominalvisceraForms from splenic vein and superiormesenteric veininferior mesenteric vein connects to this system(generally opens into the splenic vein)coronary veins of the stomach open into theportal vein directlyPORTAL CIRCULATION!

inferior vena cava

portal vein

esophageal veins

azygos vein /hemiazygos vein

superior vena cava

coronary veins ofthe stomach

(left gastric vein)

internal iliac vein

inferior rectal vein

inferior vena cava

rectal venous plexus

superior rectal vein

inferior mesenteric vein

common iliac vein

portal vein

internal pudendal vein

medial rectal vein

inferior vena cava

superficial epigastric vein

paraumbilical veins

brachiocephalic vein

superior vena cava

subclavian vein

axillary vein

thoracoepigastric vein

greater saphenous vein

femoral vein

external iliac vein

common iliac vein

portal vein