Repeated USMLE Questions Step 1- 326

Q- Pancreatic exocrine secretions empty into the duodenum through which one of the following?

A- Accessory pancreatic duct

B- Common bile duct

C- Duct of Santorini

D- Duct of Wirsung

D- Duct of Wirsung



Q- Which one of the following enzymes catalyzes the transformation of testosterone into DHT?

A- 17α-hydroxylase

B- 5 α-reductase

C- Aromatase

D- Cholesterol side chain cleavage enzyme (CYP11A1)

B- 5 α-reductase



Q- Which of the following is the active form of vitamin D?

A- 1-dihydroxycholecalciferol

B- 1,25-dihydroxycholecalciferol

C- 25-hydroxycholecalciferol

D- Cholecalciferol

B- 1,25-dihydroxycholecalciferol



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