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USMLE Mastery iOS App

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Example questions

Let's look at some sample questions

Which cells are primarily responsible for adaptive immunity?

NeutrophilsMacrophagesT and B lymphocytesMast cells

At what age does a child typically begin to use two-word phrases?

12-15 months15-18 months18-24 months24-30 months

What is the primary mechanism of action of bupropion?

Inhibition of the reuptake of norepinephrine and dopamineInhibition of the reuptake of serotoninBlockade of dopamine receptorsInhibition of monoamine oxidase

What is the purpose of a root cause analysis in healthcare?

To assign blame for an errorTo understand the factors that led to an errorTo punish those responsible for an errorTo document errors for legal purposes

What is the primary method of prevention for Meningococcal disease?

Hand hygieneIsolationVaccinationUse of antibiotics

What is the difference between anagenesis and cladogenesis?

Anagenesis is the evolution of species involving an entire population, rather than a branching event, as in cladogenesisCladogenesis is the evolution of species involving an entire population, rather than a branching event, as in anagenesisAnagenesis is the evolution of species involving a branching event, rather than involving an entire population, as in cladogenesisCladogenesis is the evolution of species involving a branching event, rather than involving an entire population, as in anagenesis

Which of the following is not a feature of contrast-induced nephropathy?

Acute kidney injuryProteinuriaIncreased serum creatinineDecreased urinary output

Which imaging modality is best for evaluating a suspected pulmonary embolism?

Chest X-rayCT pulmonary angiographyVentilation-perfusion scanMRI

What is the first step in managing a patient with suspected appendicitis?

Immediate surgeryPhysical examinationOrder CT scanAdminister antibiotics

What embryonic structure gives rise to the inner ear?

First pharyngeal pouchSecond pharyngeal pouchOtic placodeNeural crest