USMLE-Rx Step 1 Practice Q's

USMLE-Rx Step 1 Qmax Challenge #3813

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USMLE-Rx Step 1 Qmax Challenge #3813The image is from a 51-year-old man at autopsy. Prior to his death he suffered from an illness characterized by increasing shortness of breath, lower extremity edema, and a loud holosystolic heart murmur. In childhood he suffered from several bouts of an illness with polyarthritis, rash, chorea, and fever.

Which of the following is the most common histologic finding in heart tissue following death from this illness?

A. Caseous granuloma
B. Degenerative calcification
C. Fibroblast infiltrate and collagen deposition
D. Lymphocytic infiltrate
E. Myxoid degeneration
F. Non-caseating granuloma with multi-nucleated giant cells

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USMLE-Rx Step 1 Qmax Challenge #3777

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USMLE-Rx Step 1 Qmax Challenge #3777A 26-year-old man presents with left eye pain and intermittent double vision. When at rest, his left eye is deviated downward and laterally, as pictured in the image. Upgaze and adduction are limited in the affected eye; however, abduction appears intact. Also, the left lid droops, and the left pupil is dilated and unresponsive to light as shown in the image.

Which of the following cranial nerves is most likely to have been injured?

A. Abducens nerve
B. Oculomotor nerve
C. Optic nerve
D. Trigeminal nerve
E. Trochlear nerve

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USMLE-Rx Step 2 Qmax Challenge #21543

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USMLE-Rx Step 2 Qmax Challenge #21543A 7-year-old girl presents to the emergency department complaining of chest pain and pain in her lower extremities that occurred twice earlier that day while she was running at school. The chest pain as left-sided, dull, nonradiating, and accompanied by a headache. These symptoms have occurred previously, although the patient cannot recall when these episodes first began. Her temperature is 37°C (98.6°F), pulse is 140/min, blood pressure is 135/90 mm Hg, and respiratory rate is 22/min. Her lungs are clear, and cardiac examination reveals normal S1 and S2sounds, with a continuous murmur best heard over her back, between her scapulae. X-ray of her chest is shown in the image.

What additional physical examination findings would you expect in this patient?

A. A sudden episode of cyanosis that is partially relieved by squatting
B. Blue skin and general failure to thrive
C. Decreased breath sounds over bilateral lung bases
D. Normal additional findings of physical examination
E. Notching of the ribs

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This practice question is an actual question from the USMLE-Rx Step 2 CK test bank. Get more Step 2 CK study help at USMLE-Rx.com.

 

USMLE-Rx Step 1 Qmax Challenge #3726

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USMLE-Rx Step 1 Qmax Challenge #3726A 62-year-old man visits his primary care doctor because of increasing fatigue that started about 2 years ago. Routine workup shows a low hematocrit and a fecal occult blood test is positive. His doctor recommends colonoscopy which shows a lesion oozing blood. A partial colectomy is performed, and the specimen, shown in the image, is sent to pathology.

Which of the following lesion types most predisposes the patient to the pathologic process shown in the image?

A. Tubular adenoma; large polyp
B. Tubular adenoma; small polyp
C. Tubulovillous adenoma; large polyp
D. Villous adenoma; large polyp
E. Villous adenoma; small polyp

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USMLE-Rx Step 1 Qmax Challenge #3708

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USMLE-Rx Step 1 Qmax Challenge #3708The lower respiratory tract consists of several specialized cells. The image is an electron micrograph of the cells involved in the production of surfactant. This cell is also the site for cytochrome P450-dependent mixed-function oxidase activity in the lung, which is very important for detoxifying inhaled materials.

Which of the following cell types is shown?

A. Bronchial cell of Kulchitsky
B. Ciliated cell
C. Club cell
D. Goblet cell
E. Type I alveolar cell

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USMLE-Rx Step 1 Qmax Challenge #3706

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USMLE-Rx Step 1 Qmax Challenge #3706A 52-year-old woman presents with new-onset jaundice. After extensive work-up, a liver biopsy is called for. The histologic section is shown in the image. The cells indicated by the arrows are most likely undergoing which of the following processes?

A. Apoptosis
B. Caseous necrosis
C. Coagulative necrosis
D. Fat necrosis
E. Liquefactive necrosis

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USMLE-Rx Step 1 Qmax Challenge #3702

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USMLE-Rx Step 1 Qmax Challenge #3702An electron micrograph of two adjacent cells is shown in the image.

Which of the following is the most likely function of the dark band-like structures at the center of the image?

A. To allow for passage of small molecules and electrolytes
B. To anchor the two adjacent cells
C. To prevent luminal contents from entering the intercellular space
D. To produce proteins that are destined to be secreted, to be included in the plasma membrane or lysosomes
E. To provide structural support and bind epithelium to underlying tissues

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This practice question is an actual question from the USMLE-Rx Step 1 test bank. For more USMLE Step 1 prep, subscribe to our Flash Facts and Step 1 Express video series. Score the best deal on all three products with a Step 1 Triple Play Bundle.

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