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USMLE Exam Questions & Answers

Exam Code: USMLE

Exam Name: United States Medical Licensing Examination

Updated: Nov 17, 2024

Q&As: 622

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Practice These Free Questions and Answers to Pass the USMLE Certifications Exam

Questions 1

A 33-year-old man undergoes a radical thyroidectomy for thyroid cancer. During the operation, moderate hemorrhaging requires ligation of several vessels in the left side of the neck. Postoperatively, serum studies show a calcium concentration of 7.5 mg/dL, albumin concentration of 4 g/dL, and parathyroid hormone concentration of 200 pg/mL. Damage to which of the following vessels caused the findings in this patient?

A. Branch of the costocervical trunk

B. Branch of the external carotid artery

C. Branch of the thyrocervical trunk

D. Tributary of the internal jugular vein

E. Tributary of the left brachiocephalic vein

F. Tributary of the right brachiocephalic vein

Show Answer
Questions 2

A 25-day-old male is brought to the physician due to seizures, rigidity and frequent viral infections. Physical examination reveals a neonate with cyanosis in the lower extremities. The most likely cause of these findings is a

A. defect in the IL-2R gamma chain

B. defect in the lysosomal trafficking regulation gene

C. defect in the tyrosinase kinase gene

D. deletion in chromosome 22q11.2

E. mutation in the STAT3 gene

Show Answer
Questions 3

Which of the following are not treated with Nifedipine?

A. Angina

B. Arrhythmias

C. Htn

D. Fluid retention

Show Answer
Questions 4

A 54-year-old man with extensive, severe atherosclerosis sustains a thrombotic occlusion of the celiac trunk. The organs that receive their blood supply from this artery continue to function normally. Anastomoses between which of the following pairs of arteries would explain this phenomenon?

A. Left gastric artery and right gastric artery

B. Left gastroepiploic artery and right gastroepiploic artery

C. Proper hepatic artery and gastroduodenal artery

D. Right colic artery and middle colic artery

E. Superior pancreaticoduodenal artery and inferior pancreaticoduodenal artery

Show Answer
Questions 5

An emollient has a/an _____ effect.

A. Pruritic

B. Antipruritic

C. Rupture

D. Impetigo

Show Answer

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