Gross Anatomy USMLE Step 1 Practice Questions
82 board-style USMLE Step 1 questions in Anatomy. Each question shows the correct answer; create a free account for the full explanation and adaptive practice.
- USMLE Step 1 · easy1. A 3629-g (8-lb) newborn is examined shortly after spontaneous vaginal delivery. She was delivered at 40 weeks' gestation and pregnancy was uncomplicated. Her mother is concerned…
- USMLE Step 1 · medium2. A 20-year-old man presents with a 6-month history of progressive left groin swelling. He reports the swelling increases noticeably when he coughs or strains. Physical examinatio…
- USMLE Step 1 · medium3. A 28-year-old man presents to the emergency department with a 5-day history of symmetric, ascending lower extremity weakness that began in his feet and has progressively worsene…
- USMLE Step 1 · medium4. A 47-year-old man presents to the emergency department 1 hour after a straddle injury sustained when he fell across a fence rail while trimming branches. He reports acute perine…
- USMLE Step 1 · medium5. A 6-hour-old male newborn presents with bilious vomiting and abdominal distension. Vital signs show HR 145 bpm, RR 42/min, BP 65/40 mmHg, and temp 37.2°C. Prenatal ultrasound do…
- USMLE Step 1 · medium6. A 1-day-old boy presents with severe respiratory distress, tachypnea (RR 62/min), and tachycardia (HR 168/min). Physical examination reveals a scaphoid abdomen and diminished br…
- USMLE Step 1 · medium7. A 2-day-old male presents with micrognathia, malformed malleus and incus, and underdeveloped muscles of mastication causing feeding difficulty. Vital signs show HR 145 bpm, RR 4…
- USMLE Step 1 · medium8. A 27-year-old woman presents with sudden-onset severe pelvic pain, vaginal bleeding, and hemodynamic instability (BP 92/58, HR 118). She reports amenorrhea for 6 weeks. Vital si…
- USMLE Step 1 · hard9. A 38-year-old man with a history of Crohn disease presents with severe perianal pain and fever (39.2°C). Vital signs show BP 128/82, HR 102, RR 18, SpO2 98% on room air. Examina…
- USMLE Step 1 · easy10. A 29-year-old man presents with left testicular mass and elevated serum α-fetoprotein at 450 ng/mL. Vital signs show BP 128/82 mmHg, HR 88 bpm, RR 16/min, temperature 37.2°C, an…
- USMLE Step 1 · hard11. A 16-year-old boy presents with left-sided scrotal swelling and pain. Vital signs: BP 118/76 mmHg, HR 88/min, RR 16/min, Temp 37°C, SpO2 98% on room air. Physical examination re…
- USMLE Step 1 · medium12. A 30-year-old man presents to the trauma bay following a skiing accident with blunt abdominal trauma. Vital signs show BP 95/60, HR 118, RR 22, and SpO2 98%. CT imaging reveals…
- USMLE Step 1 · hard13. A 62-year-old man undergoes emergency laparotomy for hepatic hemorrhage with BP 92/58, HR 118/min, RR 22/min. Intraoperative ultrasound confirms active bleeding from the right h…
- USMLE Step 1 · medium14. A 36-year-old man presents with blunt abdominal trauma and hemodynamic instability (BP 88/52, HR 128, RR 22). CT imaging reveals hepatic laceration with active bleeding. During…
- USMLE Step 1 · hard15. A 50-year-old man presents with acute dysphagia and substernal chest pain after swallowing a large piece of meat. Vital signs: BP 128/82, HR 92, RR 18, Temp 37.2°C, SpO2 98% on…
- USMLE Step 1 · medium16. A 56-year-old man presents with cardiac tamponade (BP 92/58, HR 128, RR 22, SpO2 94%). Echocardiography reveals a large pericardial effusion with right atrial collapse. He denie…
- USMLE Step 1 · medium17. A 65-year-old man with a mediastinal mass presents with facial plethora and neck vein distension. Vital signs show BP 158/92 mmHg, HR 88/min, RR 16/min, and normal oxygen satura…
- USMLE Step 1 · hard18. A 47-year-old man undergoes left subclavian central venous catheter placement. Within 24 hours, he develops dyspnea, with vital signs showing HR 102/min, RR 22/min, and SpO2 92%…
- USMLE Step 1 · hard19. A 37-year-old woman with multiple sclerosis presents with acute diplopia. Vital signs: BP 128/82, HR 88, RR 16, Temp 37.2°C, SpO2 98%. On examination, leftward gaze reveals fail…
- USMLE Step 1 · medium20. A 54-year-old man undergoes left carotid artery surgery. Postoperatively, he presents with difficulty depressing the hyoid bone during swallowing (HR 88 bpm, BP 142/86 mmHg, RR…
- USMLE Step 1 · hard21. A 40-year-old woman has recurrent pain and swelling in the floor of the mouth during meals. Imaging shows a salivary stone within the submandibular duct, and the surgeon warns h…
- USMLE Step 1 · medium22. A 61-year-old man with a glomus jugulare tumor at the skull base presents with dysphagia, hoarseness, absent gag reflex, and weakness turning his head against resistance. Vital…
- USMLE Step 1 · medium23. A 42-year-old woman with a geniculate ganglion lesion presents with severe xerophthalmia (BP 128/82, HR 88, RR 16, Temp 37°C, SpO2 98%). She reports marked dry eyes and decrease…
- USMLE Step 1 · medium24. A 17-year-old boy undergoes middle ear surgery for cholesteatoma. Postoperatively, he presents with BP 118/76, HR 88, RR 16, temp 37.2°C, SpO2 98%. He reports reduced taste on t…