Repeated USMLE Questions Step 1- 333

Q- Which one of the following parts of fallopian tube is the widest and the most common site for fertilization?

A- Ampulla

B- Infundibulum

C- Isthmus

A- Ampulla



Q- Coagulation factor VIII is produced by which of the following cells?

A- Endothelial cells

B- Hepatic cells

C- Juxtaglomerular cells

D- Splenic macrophages

B- Hepatic cells



Q- Which one of the following substances induces the closure of patent ductus arteriosus?

A- Estradiol

B- Ibuprofen

C- Indomethacin

D- Prostaglandin E

C- Indomethacin



13 thoughts on “Repeated USMLE Questions Step 1- 333”

  1. Well, both of them need to be taken with food. Indomethacin is used to induce the closure of patent ductus arteriosus. Thank you for your comment.

  2. Sir my Pharma and Pediatrics teachers taught in Ibuprofen is more preferred over indomethacin because of risk of perforation by usage of indomethacin

  3. Correct. Thank you Dr. Deeptha for this information.

  4. Except clotting factor III,IV,VIII other factors are synthesized by the liver.

  5. Ibuprofen has no role in PDA closure. If you read it in any book, please let me know. Thank you Dr. Ana.

  6. Hello. in the question regarding the PDA, wouldn’t ibuprofen also be a correct answer?

  7. Thank you Dr. Zetun

  8. Thank you Dr Kennedy. Good luck in your boards.

  9. Thank you

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