Veterinary Anatomy I: Blood Vessels of Cat & Dog PDF

Blood Vessels of Cat & Dog abdominal and pelvic regions Veterinary Anatomy I: CVM 710: Fall 2023 029 Abdomen & pelvis Vessels Dr. Ismael Concha-Albornoz [email protected] www.anato.cl Learning Objectives 1. Identify, describe, and diagram the arterial supply and venous and lymphatic dra...

Blood Vessels of Cat & Dog abdominal and pelvic regions Veterinary Anatomy I: CVM 710: Fall 2023 029 Abdomen & pelvis Vessels Dr. Ismael Concha-Albornoz [email protected] www.anato.cl Learning Objectives 1. Identify, describe, and diagram the arterial supply and venous and lymphatic drainage of the abdomen and abdominal viscera. Differentiate parietal from visceral branches of the aorta as well as paired from unpaired vessels. 2. Identify specific branches from celiac a., cranial mesenteric a. and caudal mesenteric a. naming the organs that each one supply. 3. Identify and describe the position of the four major arteries on the surface of the stomach (right and left gastric and gastroepiploic aa.). 4. Rationalize why a dog should not be splenectomized by simply ligating the splenic artery (and vein) at its origin and then removing the spleen. 5. Define “portal system” and describe the hepatic portal system including the 3 arterial branches of the aorta that contribute the blood to the first capillary bed, the 2 veins which merge to initially form the portal vein, and any additional veins which empty into the portal vein. 6. Considering their blood supply, list and/or recognize the organs that are drained by the portal vein and explain why blood from these organs does not simply drain directly into the caudal vena cava. Conversely, list and/or recognize the organs that are not drained by the portal vein. Thoracic vessels: Abdominal vessels: Pelvis vessels: Analogy: 3d road map comparable to blood vessels route through mammalian body Descending aorta Thoracic Abdominal Abdominal aorta: Parietal branches Phrenicoabdominal aa. Lumbar aa. Deep circumflex iliac aa. Branches of the abdominal aorta: Parietal branches • Phrenicoabdominal aa. (common trunk) • Lumbar aa. • Deep circumflex iliac aa. Miller’s Fig. 11-53 Abdominal aorta Visceral branches Single vessel Renal aa. Testicular and ovarian aa. Versus Bilaterally symetrical Celiac artery Caudal mesenteric a. Cranial mesenteric a. Branches of the abdominal aorta: Parietal branches • Lumbar aa. • Phrenicoabdominal aa. (common trunk) • Deep circumflex iliac aa. Visceral branches • Celiac artery (1) • Cranial mesenteric a. (1) • Renal aa. • Testicular and ovarian aa. • Caudal mesenteric a. (1) Miller’s Fig. 11-53 Abdominal aorta: Terminal branches Median sacral a. Internal iliac aa. External iliac aa. Branches of the abdominal aorta: Parietal branches • Lumbar aa. • Phrenicoabdominal aa. (common trunk) • Deep circumflex iliac aa. Visceral branches • Celiac artery (1) • Cranial mesenteric a. (1) • Renal aa. • Testicular and ovarian aa. • Caudal mesenteric a. (1) Terminal branches • External iliac aa. • Internal iliac aa. • Median sacral a. (1) Miller’s Fig. 11-53 Abdominal aorta: Visceral branches: Blood supply to the: digestive tract, pancreas & spleen • Celiac a. • Cranial mesenteric a. • Caudal mesenteric a. Miller’s Fig. 11-54 Celiac artery 3 branches 1. Hepatic a. 2. Lf. gastric a. 3. Splenic a. Miller’s Fig. 11-54 Celiac artery: 1. Hepatic a. Hepatic brs. – - supplies liver *Cystic a. - supplies gall bladder Right gastric a. - supplies: *lesser curvature of stomach & *lesser omentum Gastroduodenal a. Right gastromental a. - supplies: *greater curvature of stomach & *greater omentum Cranial pancreaticoduodenal a. supplies: *duodenum & *adjacent pancreas, right lobe Miller’s Fig. 11-54 Celiac artery: 2. Left gastric a. (supply lesser curvature of stomach) Esophageal branches • supply esophagus Miller’s Fig. 11-56 Celiac artery: 3. Splenic a. : Supplies spleen Pancreatic branches *supplies pancreatic, left lobe Short gastric aa. *supplies stomach fundus Left gastromental a. *supplies: greater curvature of stomach & greater omentum Miller’ s Fig. 11-54 Celiac artery: 3. Splenic a. Miller’s Fig. 11-55 Evans Fig. 156 Structures supplied by the celiac artery: • • • • • • • • • Spleen Pancreas Stomach Esophagus Liver Gall bladder Duodenum Lesser omentum Greater omentum Miller’s Fig. 11-55 Branches of the abdominal aorta: Parietal branches • Lumbar aa. • Phrenicoabdominal aa. (common trunk) • Deep circumflex iliac aa. Visceral branches • Celiac trunk (a.) (1) • Cranial mesenteric a. (1) • Renal aa. • Testicular and ovarian aa. • Caudal mesenteric a. (1) Terminal branches • External iliac aa. • Internal iliac aa. • Median sacral a. (1) Miller’s Fig. 11-53 Cranial mesenteric artery: 4 branches 1. Ileocolic a. – Supplies: colon, cecum & ileum 2. Caudal pancreaticoduodenal a. – Supplies: pancreas & duodenum 3. Jejunal aa. – Supplies: jejunum 4. Ileal aa. – Supplies: ileum Miller’s Fig. 11-54 Cranial mesenteric artery: 1. Ileocolic a. a. Colic branch - supplies: initial ascending colon b. Cecal a. (to cecum) - supplies: Antimesenteric ileal br. to ileum c. Mesenteric ileal br. - supplies: ileum 2. Right colic a. - supplies: distal ascending colon, right colic flexure, initial transverse colon 3. Middle colic a. - supplies: distal transverse colon, left colic flexure, initial descending colon Evans Fig. 157 Ventral view 1. Ileocolic a. a. Colic branch b. Cecal a. • Antimesenteric ileal branch c. Mesenteric ileal br. Evans Fig. 159 Cranial mesenteric artery: 2. Caudal pancreaticoduodenal a. - supplies: distal descending duodenum & adjacent right lobe of pancreas 3. Jejunal aa. - supplies: jejunum 4. Ileal aa. - supplies: ileum Miller’s Fig. 11-54 Cranial mesenteric artery: Miller’s Fig. 11-59 Caudal mesenteric artery: a. Left colic a. - supplies: distal descending colon b. Cranial rectal a. - supplies: initial rectum Miller’ s Fig. 11-54 External iliac aa. Internal iliac aa. Median sacral a. (1) Umbilical a. Internal iliac a. Caudal gluteal a. Internal pudendal a. Vaginal a. Ovarian a. Uterine a. Female pelvis & repro organs blood supply: Internal iliac a. Umbilical a. Internal pudendal a. Caudal gluteal a. Prostatic a. Testicular a. Ductus deferens a. Male pelvis & repro organs: Veins draining into the abdominal caudal vena cava: • Hepatic vv. • Phrenicoabdominal vv. • Renal vv. • Right Testicular or ovarian vv. • Lumbar vv. • Deep circumflex iliac vv. • Common iliac vv. Miller’s Fig. 12-14 Caudal vena cava Left renal vein Veins draining into the abdominal caudal vena cava: Right Testicular and ovarian vv. Hepatic vv. Azygos v. Renal vv. Lumbar vv. Deep circumflex iliac vv. Common iliac vv. caudal vena cava caudal vena cava Hepatic vv. Portal vein: Portal vein drain: spleen, pancreas, stomach, small and large intestines. These organs are drained via portal vein, the blood enter the liver and then using the hepatic veins connects with the caudal vena cava. Portal vein: • Gastroduodenal v. Drains: pancreas, stomach, duodenum, & greater omentum • Splenic v. Drains: spleen, stomach, pancreas, & greater omentum • Cranial mesenteric v. Drains: caudal duodenum, jejunum, ileum, & pancreas • Caudal mesenteric v. Drains: cecum & colon Blood flow of the liver: • Blood flow to the liver – Hepatic artery – Portal vein • Blood flow from the liver – Hepatic veins Budras pg. 59 Questions ?????