Question Banks

A 25-year-old man presents with a 4-cm mass above the clavicle. Chest X-ray demonstrates marked mediastinal widening. Excisional biopsy of the supraclavicular mass demonstrates areas with the appearance shown in the photomicrograph above. The large cell (indicated with the arrow) is most likely which of the following?

A 5-year-old boy falls off his bike and fractures his humerus. He is taken  to the emergency room, and the bone is set by one of the emergency room  physicians. Which of the following is responsible for producing the  majority of the new bone that will reunite the two fragments?

A 15-year-old boy is evaluated by a clinician for failure to develop normal  male secondary sexual characteristics. Physical examination reveals small   testes, a small penis, and gynecomastia. The boy has had some difficulties    in school, and the parents say that the school psychometrist said he had     an IQ of 90. This patient's condition is most likely to be related to      which of the following?

A 68-year-old woman presents for a routine check-up. Her only complaint  is that she occasionally experiences a little swelling in her ankles.   Her serum potassium is 3.5 mEq/L, so the physician wants to avoid   unnecessary potassium losses. Which of the following diuretics would    be most appropriate for this patient?

A patient presents with a bulge in the groin, which his physician diagnoses as an inguinal hernia. To determine whether it is an indirect or direct inguinal hernia, the physician applies pressure over the deep  inguinal ring while palpating over the superficial inguinal ring. The   patient is then asked to cough. The physician notes that the hernia    does not push out of the abdomen and concludes that it is an indirect     inguinal hernia. Where did the physician apply pressure?

Which of the following is found in the respiratory zone of the lung?

A 15-year-old girl is brought into the emergency room with severe abdominal  pain and a fever. Laboratory examination is remarkable for an elevated   white blood cell count and a pregnancy test is positive. Upon questioning,    it is determined that she attempted to terminate her pregnancy by     inserting a sharp object into her vagina. The physician determines      that the wall of the posterior fornix of the vagina has been penetrated. Into what region did the sharp object penetrate?

A 48-year-old white female secretary presents with progressive difficulty  typing over the past month. She also notes that her hands begin to feel   numb and weak after typing for long periods of time. Upon testing,    which of the following deficits would be predicted?

A 15-year-old boy presents to his physician with several weeks of slowly  worsening pruritus of both of his feet. He is otherwise well and taking   no medications. On examination, he has bilateral, erythematous, dry    scaling lesions that are most obvious in the interdigital web spaces     and on the soles. There is no bleeding or exudate. What would most      likely be found in a potassium hydroxide (KOH) mount of a scrapin      g of the affected skin?

An infant is born with an abnormally developed falciform ligament.  The hepatogastric and hepatoduodenal ligaments are also malformed  . These developmental anomalies are most likely due to abnormal   development of the