COMSAE PHASE 1 FORM 114–STYLE PRACTICE EXAM –
176 QUESTIONS WITH ANSWERS AND RATIONALES (2026
EDITION) LATEST UPDATE THIS YEAR.PDF INSTANT
DOWNLOAD PDF
Anatomy & Embryology (Q1–25)
1. A 22-year-old man sustains a deep laceration to the anterior aspect of the
wrist. He is unable to flex the distal interphalangeal joints of digits 2–3. Which
structure is most likely injured?
A. Flexor digitorum superficialis tendon
B. Flexor digitorum profundus tendon
C. Median nerve proximal to the carpal tunnel
D. Ulnar nerve at Guyon’s canal
FDP flexes DIP joints; injury prevents DIP flexion of lateral digits.
2. A 45-year-old woman has numbness over the lateral palm and lateral 3½
digits, with weakness of thumb opposition. Which nerve is most likely
compressed?
A. Ulnar nerve
B. Median nerve at the carpal tunnel
C. Radial nerve in the spiral groove
D. Musculocutaneous nerve
,Median nerve compression causes thenar weakness and sensory loss in lateral 3½
digits.
3. A 30-year-old man cannot abduct his arm beyond the first 15 degrees but can
initiate abduction. Which muscle is most likely paralyzed?
A. Deltoid
B. Supraspinatus
C. Infraspinatus
D. Teres minor
Supraspinatus initiates abduction (first ~15°); deltoid continues beyond that.
4. During a cholecystectomy, the surgeon ligates the cystic artery. This artery is
typically a branch of which vessel?
A. Proper hepatic artery
B. Right hepatic artery
C. Left gastric artery
D. Gastroduodenal artery
The cystic artery usually arises from the right hepatic artery.
5. A 50-year-old man has a tumor in the head of the pancreas causing painless
jaundice. Which structure is most likely compressed?
,A. Splenic vein
B. Common bile duct
C. Superior mesenteric artery
D. Left renal vein
Pancreatic head masses can compress the common bile duct, causing jaundice.
6. A 25-year-old woman has loss of sensation over the posterior thigh and leg,
with weakness of knee flexion and all movements below the knee. Which nerve
root levels are most likely involved?
A. L2–L3
B. L4–S3 (sciatic nerve distribution)
C. L1–L2
D. S1–S2 only
Sciatic nerve (L4–S3) supplies posterior thigh and most of leg/foot.
7. A 60-year-old man has a posterior duodenal ulcer that erodes into an artery,
causing massive bleeding. Which artery is most likely involved?
A. Left gastric artery
B. Gastroduodenal artery
C. Short gastric artery
D. Inferior pancreaticoduodenal artery
Posterior duodenal ulcers can erode the gastroduodenal artery.
, 8. A 19-year-old man has a fracture of the surgical neck of the humerus. Which
structure is at greatest risk?
A. Radial nerve
B. Axillary nerve
C. Median nerve
D. Ulnar nerve
Axillary nerve winds around the surgical neck of the humerus.
9. A 40-year-old woman has weakness of shoulder abduction and external
rotation after a stabbing injury to the lateral neck. Which nerve is most likely
injured?
A. Long thoracic nerve
B. Suprascapular nerve
C. Dorsal scapular nerve
D. Spinal accessory nerve
Suprascapular nerve innervates supraspinatus and infraspinatus.
10. A 28-year-old man has a herniated disc at L4–L5 compressing the traversing
nerve root. Which nerve root is most commonly affected?
A. L3
B. L4
176 QUESTIONS WITH ANSWERS AND RATIONALES (2026
EDITION) LATEST UPDATE THIS YEAR.PDF INSTANT
DOWNLOAD PDF
Anatomy & Embryology (Q1–25)
1. A 22-year-old man sustains a deep laceration to the anterior aspect of the
wrist. He is unable to flex the distal interphalangeal joints of digits 2–3. Which
structure is most likely injured?
A. Flexor digitorum superficialis tendon
B. Flexor digitorum profundus tendon
C. Median nerve proximal to the carpal tunnel
D. Ulnar nerve at Guyon’s canal
FDP flexes DIP joints; injury prevents DIP flexion of lateral digits.
2. A 45-year-old woman has numbness over the lateral palm and lateral 3½
digits, with weakness of thumb opposition. Which nerve is most likely
compressed?
A. Ulnar nerve
B. Median nerve at the carpal tunnel
C. Radial nerve in the spiral groove
D. Musculocutaneous nerve
,Median nerve compression causes thenar weakness and sensory loss in lateral 3½
digits.
3. A 30-year-old man cannot abduct his arm beyond the first 15 degrees but can
initiate abduction. Which muscle is most likely paralyzed?
A. Deltoid
B. Supraspinatus
C. Infraspinatus
D. Teres minor
Supraspinatus initiates abduction (first ~15°); deltoid continues beyond that.
4. During a cholecystectomy, the surgeon ligates the cystic artery. This artery is
typically a branch of which vessel?
A. Proper hepatic artery
B. Right hepatic artery
C. Left gastric artery
D. Gastroduodenal artery
The cystic artery usually arises from the right hepatic artery.
5. A 50-year-old man has a tumor in the head of the pancreas causing painless
jaundice. Which structure is most likely compressed?
,A. Splenic vein
B. Common bile duct
C. Superior mesenteric artery
D. Left renal vein
Pancreatic head masses can compress the common bile duct, causing jaundice.
6. A 25-year-old woman has loss of sensation over the posterior thigh and leg,
with weakness of knee flexion and all movements below the knee. Which nerve
root levels are most likely involved?
A. L2–L3
B. L4–S3 (sciatic nerve distribution)
C. L1–L2
D. S1–S2 only
Sciatic nerve (L4–S3) supplies posterior thigh and most of leg/foot.
7. A 60-year-old man has a posterior duodenal ulcer that erodes into an artery,
causing massive bleeding. Which artery is most likely involved?
A. Left gastric artery
B. Gastroduodenal artery
C. Short gastric artery
D. Inferior pancreaticoduodenal artery
Posterior duodenal ulcers can erode the gastroduodenal artery.
, 8. A 19-year-old man has a fracture of the surgical neck of the humerus. Which
structure is at greatest risk?
A. Radial nerve
B. Axillary nerve
C. Median nerve
D. Ulnar nerve
Axillary nerve winds around the surgical neck of the humerus.
9. A 40-year-old woman has weakness of shoulder abduction and external
rotation after a stabbing injury to the lateral neck. Which nerve is most likely
injured?
A. Long thoracic nerve
B. Suprascapular nerve
C. Dorsal scapular nerve
D. Spinal accessory nerve
Suprascapular nerve innervates supraspinatus and infraspinatus.
10. A 28-year-old man has a herniated disc at L4–L5 compressing the traversing
nerve root. Which nerve root is most commonly affected?
A. L3
B. L4
