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FA GI Anatomy
Question | Answer |
---|---|
List the abdominal layers from superficial to deep. | 1) Skin 2) Superficial fascia (Camper and Scarpa) 3) External oblique 4) Internal oblique 5) Transverse abdominis 6) Transversalis fascia 7) Extraperitoneal tissue 8) Peritoneum |
Name the 2 ligaments in the lesser omentum. | Hepato-duodenal ligament, and Gastro-hepatic ligament |
What ligament connects the spleen to the posterior abdominal wall? | Splenorenal ligament |
What ligament contains the splenic artery and vein? | Splenorenal ligament |
The gastro-hepatic ligament contains which artery? | Gastric artery |
The gastro-colic ligament contains which artery? | Gastro-epiploic artery |
The gastro-splenic ligament contains which artery? | Short gastrics |
What structures are directly anterior and directly posterior to the epiploic foramen of Winslow? | Anterior = Portal triad Posterior = IVC |
Which enteric nerve plexus is in the GI submucosa layer? What is its function? | Submucosal nerve plexus (Meissner's). Function = coordinates Motility |
Which enteric nerve plexus is in the GI muscularis externa layer between the inner circular and outer longitudinal layers of smooth muscle? What is its function? | Myenteric nerve plexus (Auerbach's). Function = regulates local Secretions, blood flow and absorption |
State the differences between the type of muscle in the upper 1/3 of the esophagus and the lower 1/3 of the esophagus. | Upper 1/3 = striated muscle Lower 1/3 = smooth muscle Middle 1/3 = both |
State the branches of the celiac trunk. | Common hepatic artery, Splenic artery, Left gastric artery |
A peptic ulcer may affect which artery? | Gastroduodenal artery, which is directly behind the pylorus |
Caput medusa is a result of anastamosis between which veins? | Paraumbilical <-> superficial and inferior epigastric |
Esophageal varices is a result of anastamosis between which veins? | Left gastric <-> esophageal |
Internal hemorrhoids is a result of anastamosis between which veins? | Superior rectal <-> middle and inferior rectal |
State the veins in which a portocaval shunt can be inserted to relieve portal hypertension. | Splenic vein and left renal vein. |
State the arterial supply of the rectum above the pectinate line and below the pectinate line. | Above pectinate line = Superior rectal artery (branch of IMA) Below pectinate line = Inferior rectal artery (branch of internal pudendal artery) |
State the venous drainage of the rectum above the pectinate line and below the pectinate line. | Above the pectinate line = superior rectal vein -> inferior messenteric vein -> portal system Below the pectinate line = inferior rectal vein -> internal pudendal vein -> internal iliac vein -> IVC |
State the innervation below the pectinate line. | Innervated by inferior rectal nerve (branch of the pudendal nerve), which is a somatic innervation. |
State the liver zone which is 1st affected by viral hepatitis. | Zone I |
State the liver zone which is 1st affected by ischaemia. | Zone III |
State the liver zone which is most sensitive to toxic injury. | Zone III |
List the structures contained in the femoral triangle. | Femoral vein, artery and nerve. |
What is the difference between the content of the inguinal canal in male and female? | Male = Inguinal canal has gonadal artery (sperm cord) Female = Inguinal canal has caudal genital ligament (round ligament) |
Which layer of the abdominal wall forms the external spermatic fascia? | External oblique layer's fascia |
Which layer of the abdominal wall forms the cremasteric muscle and fascia? | Internal oblique layer |
Which layer of the abdominal wall forms the internal spermatic fascia? | Transversalis fascia |
Whiich type of hernia displaces the gastro-esophageal junction? | Sliding hiatal hernia |
Diaphragmatic hernia may occur in infants as a result of what? | Defective development of pleuroperitoneal membrane? |
Indirect inguinal hernia may occur in infants due to what? | Failure of processus vaginalis to close |
What is the difference between the coverings of direct vs indirect inguinal hernia? | Indirect inguinal hernia is covered by all 3 layers of the spermatic fascia, but direct inguinal hernia is only covered by the external spermatic fascia. |
Indirect inguinal hernia is lateral to what artery? | Inferior epigastric artery |
State the boundaries which form the Hesselbach's triangle. | Inferior epigastric artery, Lateral border of rectus abdominis, Inguinal ligament |