Abdomen Flashcards
At the level of ASIS , The posterior wall of rectus sheath is formed by?
Transversalis Fascia
Internal oblique becomes
Cremasteric Muscle
External oblique becomes
External Spermatic Fascia
Transversalis fascia becomes
Internal Spermatic Fascia
Superior and Lateral border of Hesselbach triangle is the _________?
Inferior epigastric artery
Identify what type of hernia.
Patent processus vaginalis , lateral to inferior epigastric vessels ; enters the scrotum.
Indirect Inguinal Hernia
Abdominal policemen
Omentum
Lymphatic drainage of the stomach
Celiac Nodes
Brings Oxygenated blood to the liver?
Hepatic Artery
Jejunum vs Ileum
Jejunum - few arterial arcades, longer vasa recta
Ileum- more arterial arcades, shorter vasa recta
Hepatodoudenal ligament conducts portal triad? (3)
Portal vein posterior
Common bile duct anterior to the right
Hepatic artery anterior to the left
Arise from T12 , supply foregut and body of spleen?
Celiac artery
Arise from L1 , supply midgut
SMA
Arise from L3 , supply hindgut
IMA
Length of esophagus ?
10 inches / 25 cm long
Supplies fundus of stomach ?
Short gastric artery from splenic artery
More fat , many prominent arcades, short vasa recta, and small and widely separated plicae?
Ileum
Larger , more numerous, closely set in the jejunum than ileum?
Valves of Kercking / Plicae circulares
Present in ileum but absent in jejunum?
Peyer’s patches
Anatomical basis of hematemesis, spider nevi and caput medusae? (3)
- Blood from portal venous system is shunted to the periumbilical veins manifesting as dilated paraumbilical collateral veins pattern similar to the head of Medusa.
- As the pressure in the portal vein rises , blood flow in the portocaval anastomoses reverses causing portal blood to enter the systemic circulation.
- Blood flow forms anastomoses at the inferior end of the esophagus to produce esophageal varices.
Cause of ascites? (3)
- Increased pressure in the portal vein results in the increase in the pressure in the splenic and superior and inferior mesenteric veins.
- Fluid is forced out of the capillary beds into the peritoneal cavity.
- Portal hypertension causes protein containing liquid to leak from the surface of the liver to accumulate in the peritoneal cavity.
Methods to reduce portal blood pressure? (2)
- Creating anastomosis from portal vein to inferior vena cava (portocaval anastomosis)
- Creating anastomosis from the splenic vein to the left renal vein (splenorenal anastomosis)
Vascular lesions consisting of central arteriole surrounded by many smaller vessels occurring due to increase in estradiol.
Spider angiomata
Present in the small intestine but absent in large intestine? (4)
Plicae circulares
Peyer’s patches
Villi
Paneth cells
Structure Obstructed by tumors at the head of the pancreas?
Common bile duct
Obstructed jaundice cause what type of cancer?
Cancer in the head of pancreas
Cells that Secretes Somatostatin?
Delta cells
Functional parts of the left lobe of liver? (2)
Quadrate lobe
Caudate lobe
Anatomical changes in the hepatic parenchymal cells in liver cirrhosis? (3)
- Progressive destruction of parenchymal cells.
- Cells are replaced by fibrous tissues that contract and harden.
- Fibrous tissues surround the intrahepatic blood vessels and the biliary radicles causing increase pressure in the portal veins.
Borders of Foramen of Winslow / Epiploic Foramen?
Anterior: Hepatodoudenal ligament, Portal vein, Hepatic artery, Bile duct
Posterior: IVC
Superior: Caudate lobe liver
Inferior: Superior part of Doudenum
Lymph drainage of liver?
Celiac nodes
Anterior segments of liver? (2)
Segments V and VIII
Zone most susceptible of injury ?
Zone 3 ( Perivenous, Pericentral, Centrilobular Zone)
Cells that are more numerous in the large intestine than small intestine?
Goblet cells
The free margin of the lesser omentum contains what structure?
Portal triad
Forms most of the head of the pancreas including the unicate process?
Ventral Pancreatic Bud
Forms the remainder of the head of the pancreas, body and tail?
Dorsal pancreatic bud
Gallbladder capacity?
30-50ml
Blood supply of the proximal segment of the doudenum?
Superior pancreaticodoudenal artery
Opening of ampulla of vater to doudenum?
Major Doudenal Papilla
Blood supply of the proximal segment of the duodenum?
Superior pancreaticodoudenal artery
Cystic artery os a branch of?
Right hepatic artery
Triangle of Calot boundaries?
Liver - Superior
Cystic Duct - Inferior
Common hepatic Duct - Medial
Inside the triangle is the Right Hepatic Artery
Valve of Houston?
Rectum
Appendicular artery arises from?
Ileocolic artery
How to locate the appendix?
Trace the taenia coli on the cecum
Hemorrhoids that prolapse through the anus but reduce spontaneously?
Grade II
Lymph drainage of posterior abdominal wall, kidney, adrenals and gonads. (4)
R/ L Lateral Aortic
Para-aortic
Lumbar lymph nodes
Muscle of the loin?
Psoas major
Largest branch of Lumbar Plexus , supplies muscles on anterior thigh and skin on antero-medial aspect.
Femoral nerve
Areolar tissue outside perirenal fat, encloses kidney and suprarenal glands.
Gerota’s fascia
Cells that Secretes renin?
Juxtaglomerular Granular Cells
Renal artery is a branch of ?
Aorta
Right & Left Renal vein difference ?
Left Renal Vein is Longer
LVL
Right & Left Renal artery difference ?
Right Renal Artery is Longer
RAL
Characteristics of Adrenal Gland? (3)
- Right is pyramid-shaped
- Left is crescent ( semilunar)
- Yellowish in color
Ureter anatomic relations ?
Posterior to Gonadal Vessels
Anterior to Internal and Common Iliac Vessels
Structures that could be eroded as the result of perforation of an ulcer in the posterior wall of the stomach? (7)
- Stomach bed
- Pancreas
- Spleen
- Left kidney
- Left suprarenal gland
- Transverse colon, mesocolon
- Diaphragm
A tributary of the right gastric vein that passes anterior to the pylorus at its junction with the doudenum?
Prepyloric Vein of Mayo
Blood supply of the stomach?
Lesser curvature : Right & Left Gastric Artery
Greater Curvature: Right & Left Gastro-omental ( Gastroepiploic) artery
Fundus- Short Gastric Artery
Pediatric with severe intermittent abdominal pain and currant jelly stools?
Intussusception
Functional Segment of Caudate Lobe?
Segment I
Ligament that contains tail of pancreas and splenic vessels?
Leinorenal / Splenorenal Ligament
The Celiac artery supplies foregut endoderm derivatives except what organ?
Spleen ( Mesoderm Derivative)
Retroperitoneal organs (8)
SAD PUCKER
Suprarenal / Adrenal Glands
Aorta and IVC
Duodenum (2nd- 4th part)
Pancreas ( except tail)
Ueters
Colon
Kidneys
Esophagus ( thoracic portion)
Rectum ( partially)
Length of descending colon?
10 inches
“ DUDES with 10 inches”
Doudenum
Ureter
Descending colon
Esophagus
Sigmoid colon
Structure that shunts a portion of umbilical vein blood flow directly to the IVC, allow oxygenated blood from the placenta to bypass the liver.
Ductus venosus
Blood supply of the cecum? (4)
Anterior / Posterior Cecal Artery
Ileocolic artery
SMA
Rectosigmoid junction level?
S3 vertebra