🥵 HARD
These questions, a fourth in a set of abdominal anatomy MCQs, cover some challenging questions about the mesentery and apply other abdominal and physiological knowledge to some more clinical vignettes.
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Abdominal Anatomy Part Four MCQ
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Question 1 |
Which of the following are not constituents within the root of the mesentery?
Superior mesenteric artery | |
Superior mesenteric vein | |
T11 SNS fibres | |
T12 SNS fibres |
Question 2 |
Of the mesenteric root
It divides the lateral colic gutters | |
It runs from the point delineating upper and lower GI bleeds clinically | |
It contains the inferior mesenteric vein | |
It contains T5 SNS afferents |
Question 3 |
The root of the mesentery runs inferolaterally to the
Ileal diverticulum | |
Ascending colon | |
Hepatic flexure | |
Ileocecal junction |
Question 4 |
Jejunal peristalsis is partly regulated by
Autonomics of the coeliac plexus | |
Fibres running with the inferior mesenteric artery | |
PaNS T5 root value | |
The vagus nerve |
Question 5 |
A patient presents with fever, malaise and periumbilical pain localising to the right inguinal region. Which of the following is not an appropriate differential for the initial presentation?
Pancreatitis secondary to gallstones | |
Appendicitis | |
Haemoperitoneum second to fallopian tubular ectopic rupture | |
Ileal diverticulum of Meckel |
Question 5 Explanation:
The pattern of the pain is consistent with midgut involvement. The pancreas is the only organ that isn't a midgut structure and is therefore the right answer.
Question 6 |
Which of the following is the appropriate surface anatomy of the initial bifurcation of the major arterial supply to the lower limb, abdominopelvis and perineum?
Subcostal plane | |
Supracristal plane | |
Transpyloric plane | |
Transtubercular plane |
Question 7 |
A patient has fallen off his horse and landed on his left side. Inspection reveals painful, tender and red ipsilateral flank signs with visible signs of hypovolaemic shock occurring on ED presentation by ambulance. The paramedic on scene ?fracture of L rib 10. Which organ should be first FAST-scanned (USS) to ascertain integrity?
Pancreas | |
Left kidney | |
Spleen | |
Stomach |
Question 8 |
An infection has tracked from the umbilicus through the patient's coronary ligament distally to the viscera of which it is associated. Which test would best indicate the true functionality of the now infected organ?
ALT | |
ALP | |
Prothrombin time | |
Oligoclonal band concentration |
Question 8 Explanation:
The patient has hepatitis. Thus a true test of liver function, aka bilirubin, urea, PT time or albumin can be ascertained to check functionality decline - if any are present.
Question 9 |
A patient begins iatrogenic exsanguination due to surgical complications in a liver lobar resection. What is the origin of the major supply of blood TOWARD the liver?
L3 | |
The superior mesenteric artery | |
T12, the coeliac trunk | |
Formed posterior to the neck of the pancreas |
Question 9 Explanation:
The vast majority of blood travelling toward the liver is venous, not arterial, and thus is derived from the hepatic portal vein. There are a lot of anatomic varieties associated with this structure, but classically-speaking it is formed posterior to the pancreatic neck by the union of the splenic and superior mesenteric veins.
Question 10 |
The following are not regions of localised dilatation and tortuosity at an anastomotic site in a patient with severe liver cirrhosis and secondary portal hypertension ...
Between the internal and external rectal venous plexuses | |
Between the left gastric and azygous venous branches | |
Between the coronary ligament venous branches and superficial epigastric veins | |
Between the inferior vena cava and hepatic vein |
Question 10 Explanation:
Though note there is an oft-forgotten intrahepatic portocaval anastomosis where the ductus venous undergoes recanalisation to shunt into the IVC as in the foetus.
Question 11 |
Name structures 6, 8, 9 respectively please ...
Common hepatic duct, hepatopancreatic ampulla and gallbladder | |
Common bile duct, hepatopancreatic ampulla and gallbladder | |
Pancreatic duct, hepatopancreatic ampulla and gallbladder | |
Common bile duct, major duodenal papilla and gallbladder |
Question 12 |
Which of the following is not a constituent of the lower urinary tract?
The external urethral sphincter | |
The renal pelvis | |
The urinary trigone | |
The cavernous urethra |
Question 13 |
Through which plane can a renal abscess spread bilaterally to include the other renal parenchyma and even vasculitis of the IVC and aorta?
Immediately superficial to pararenal fascia | |
Immediately superficial to prerenal fascia | |
Within the renal cortex | |
Only in pelvic kidney second to nephroptosis |
Question 14 |
A patient presents with haemoptysis, vomitus and severe pain score of 10/10 from the loin and migrating to the groin periodically. The patient is diagnosed, after imaging, with ureteric calculi. Which of the following sites is the least likely location of said stone?
The pelvicouterine junction | |
At the internal urethral sphincter | |
As the ureter cross the pelvic brim | |
As the ureter crosses the sacroiliac joint |
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