Q- Which of the following markers identifies B lymphocytes in a blood sample treated with different fluorescent-labeled antibodies? A- CD3 B- CD4 C- CD8 D- CD19 Q- A patient with a history of diabetes presents with dark bronze skin pigmentation and multiple arthralgia. Which of the following would be detected in a joint aspirate? A- […]
repeated usmle questions
Pharmacology MCQs- 249
Q- Stimulation of muscarinic receptors by pilocarpine is competitively inhibited by which of the following medications? A- Atropine B- Edrophonium C- Physostigmine D- Pralidoxime Q- Which one of the following local anesthetics can NOT be given parenterally due to its physicochemical properties? A- Benzocaine B- Etidocaine C- Mepivacaine D- Procaine Q- Which one of the […]
Repeated USMLE Questions Step 2 CK- 458
Q- Which of the following tests is the most accurate one to confirm the diagnosis of achalasia? A- Barium esophagram B- Chest-x-ray C- Manometry D- Upper endoscopy Q- Which of the following is the best therapy for essential tremors? A- Haloperidol B- Metoclopramide C- Physiotherapy D- Propranolol Q- A 19-year-old woman presents with nausea and […]
Repeated USMLE Questions Step 1- 329
Q- Mullerian-inhibitory factor plays a major rule in development of the male reproductive system. Which type of cells secrets it? A- Leydig cells B- Sertoli cells Q- If a new effective treatment for COVID-19 is initiated, which of the following will be the appropriate effect on incidence and prevalence? A- Both incident and prevalence decrease […]
Pharmacology MCQs- 248
Q- Which of the following drugs is used after chemotherapy to increase the leukocyte count if it drops? A- Dexamethasone B- Filgrastim C- Interleukin-2 D- Prednisone Q- Which of the following drugs has the shortest half-life and used in acute anxiety? A- Alprazolam B- Chlordiazepoxide C- Clonazepam D- Flurazepam Q- Which one of these drugs […]
Repeated USMLE Questions Step 2 CK- 457
Q- Which one of the following is NOT a factor in Apgar Scoring System? A- Heart rate B- Reflex irritability C- Respiration D- Skull dimensions Q- Which of the following is the earliest abnormal test after infection with hepatitis B? A- ALT B- Anti-hepatitis B antibodies C- Serum bilirubin D- Surface antigen Q- Which of […]