FRCR Anatomy Mock 5 — Questions and Answers
Question 1: On MRI of the wrist, the triangular fibrocartilage complex (TFCC) is anchored to which ulnar structure?
- Ulnar styloid process (Correct answer)
- Ulnar head articular surface
- Pisiform
- Hamate
Correct answer: Ulnar styloid process
The TFCC consists of the articular disc plus several ligaments, with its ulnar apex attaching to the base and tip of the ulnar styloid process.
Question 2: On CT pulmonary angiography, which lobe receives the lingular bronchus?
- Left upper lobe (Correct answer)
- Left lower lobe
- Right middle lobe
- Right lower lobe
Correct answer: Left upper lobe
The lingula comprises the superior and inferior lingular segments of the left upper lobe, supplied by the lingular bronchus arising from the left upper lobe bronchus.
Question 3: The posterior inferior cerebellar artery (PICA) arises most commonly from which vessel?
- Vertebral artery (Correct answer)
- Basilar artery
- Posterior cerebral artery
- Superior cerebellar artery
Correct answer: Vertebral artery
PICA typically arises from the intradural segment of the vertebral artery and is the largest branch of the vertebral artery, supplying the posterior inferior cerebellum and dorsolateral medulla.
Question 4: On axial CT of the abdomen, which structure marks the boundary between the head and body of the pancreas?
- Superior mesenteric vessels (Correct answer)
- Splenic vein
- Portal vein confluence
- Gastroduodenal artery
Correct answer: Superior mesenteric vessels
The superior mesenteric artery and vein pass anterior to the uncinate process, and their left border marks the conventional boundary between the pancreatic head and body.
Question 5: On a lateral skull radiograph, the pituitary fossa (sella turcica) floor is most accurately assessed by identifying which structure?
- Dorsum sellae and tuberculum sellae (Correct answer)
- Posterior clinoid processes
- Anterior clinoid processes
- Cribriform plate
Correct answer: Dorsum sellae and tuberculum sellae
The boundaries of the pituitary fossa are defined anteriorly by the tuberculum sellae and posteriorly by the dorsum sellae, with the floor connecting them.
Question 6: In the orbit, the nasociliary nerve enters through which structure?
- Superior orbital fissure (within the tendinous ring) (Correct answer)
- Inferior orbital fissure
- Optic canal
- Anterior ethmoidal foramen
Correct answer: Superior orbital fissure (within the tendinous ring)
The nasociliary nerve, a branch of V1, enters the orbit through the superior orbital fissure within the common tendinous ring (annulus of Zinn), along with CN III, VI, and the abducens nerve.
Question 7: On CT of the abdomen, the splenorenal ligament connects the spleen to which structure and transmits which vessels?
- Left kidney; splenic vessels and tail of pancreas (Correct answer)
- Stomach; short gastric vessels
- Diaphragm; left phrenic vessels
- Left kidney; left renal vein
Correct answer: Left kidney; splenic vessels and tail of pancreas
The splenorenal (lienorenal) ligament connects the splenic hilum to the anterior surface of the left kidney and transmits the splenic vessels and the tail of the pancreas.
FRCR Anatomy Mock 5
On MRI of the wrist, the triangular fibrocartilage complex (TFCC) is anchored to which ulnar structure?