Free USMLE USMLE Exam Questions

Which of the following is not true concerning Brown-Sequard syndrome? 

A 40-year-old woman comes to the physician because of a 6-month history of increased facial hair growth. Her last menstrual period was 4 months ago. She is 165 cm (5 ft 5 in) tall and weighs 70 kg (154 lb); BMI is 26 kg/m2. Her pulse is 80/min, and blood pressure is 130/82 mm Hg. Physical examination shows temporal balding and coarse dark hair on the upper lip and chin. Pelvic examination shows clitoral enlargement. Her serum testosterone concentration is increased. Serum concentrations of androstenedione, dehydroepiandrosterone, and urinary 17-ketosteroids are within the reference ranges. Ultrasonography of the pelvis shows a 12-cm ovarian mass. Which of the following best describes this mass?

A 36-year-old man with profound intellectual disability is brought to the physician by staff at his facility

because of increasing abdominal girth during the past 2 weeks. He is unable to speak, and no medical

history is currently available. Physical examination shows a protuberant abdomen with a fluid wave and

shifting dullness. There are no signs of trauma to the area. Laboratory studies show no abnormalities. A CT

scan of the abdomen is shown. Fluid is present in which of the following areas as indicated by the arrow?

Which of the following matches the definition: The maximum volume of air that can be exhaled after taking the deepest breath possible?

Normal values for HCO3 are considered: