USMLE Step 1

Q- Which of the following statements correctly describes the relative risk of a study? A- Odds that the group with a disease was exposed to a risk factor divided by odds that the group without the disease was exposed B- Risk of developing disease in the exposed group divided by risk in the unexposed group […]

Q- The tracheal tube is originated from which of the following structures? A- Ductus arteriosus B- Foregut C- Fourth pharyngeal arch D- Third pharyngeal arch Q- Which of the following endocrine disorders is characterized by high blood pressure, sodium and water retention, low potassium level and decreased renin activity? A- Addison’s disease B- Pheochromocytoma C- […]

Q- If the prevalence of a disease is 10%, what is the chance that randomly selected 3 persons out of this population will all have the disease? A- 0.1 B- 0.0.1 C- 0.001 D- 0.0001 Q- Which one of the following neoplasms is the most likely related to HIV infection? A- Burkitt’s lymphoma B- Hodgkin’s […]

Q- Which of the following is responsible for the wrinkled appearance of the scrotum? A- Dartos fascia B- Pampiniform plexus C- Thickened keratinized epithelium D- Tunica albuginea Q- Which of the following is a serious complication of ergotamine? A- Depression B- Headache C- Hypotension D- Prolonged vasospasm Q- Regulation of which of the following regions […]

Q- Which of the following is the most common cancer of the lower third of esophagus in non-alcoholic, non-smoker patients? A- Adenocarcinoma B- Melanoma C- Sarcoma D- Squamous cell carcinoma . Q- Which of the following muscles are responsible for primary abduction of the arm at the shoulder joint? A- Coracobrachialis and deltoid B- Deltoid […]

Q- Which one of the following medications is used for cases of Parkinson’s disease and influenza type A? A- Amantadine B- Benztropine C- Bromocriptine D- Ribavirin Q- Which of the following statements is correct regarding the apex of the upright lung compared to its base? A- Alveoli are more compliant at the apex than at […]