Test

Which of the following is specifically associated with infection with  Schistosoma haematobium?

A football player is examined by the team doctor following a shoulder  injury during a game. Preliminary x-rays show an inferior dislocation of   the humerus. On further examination, there is weakness in lateral rotation    and abduction of the arm. The nerve most likely affected is the

A 45-year-old homeless man has a chronic cough, a cavitary lesion of  the lung, and is sputum positive for acid-fast bacilli. Which of the  following is the principle form of defense by which the patient's body   fights this infection?

A researcher is examining the distribution of an ion channel protein  in the kidney. She incubates slices of kidney tissue in a dilute solution   of a specific antibody directed against the protein, then uses the    immunoperoxidase method to localize the ion channel proteins. She     notes the presence of brown pigment in a population of epithelial      cells, which on closer examination, have a brush border. The      researcher concludes that the protein is probably present in      cells of the

A mutation affecting the development of the diencephalon could  interfere with the secretion of which of the following hormones?

A pastry chef cut his finger while slicing a cake. After a week, the site of the injury is warm, red, and swollen, and begins draining pus. While preparing some cream pies, he contaminates the custard with drainage  from the lesion. The pies were eaten several days later by patrons of the   restaurant. Within 4 hours they developed diarrhea and vomiting with no    fever. Which of the following organisms would be most likely to cause     these symptoms?

A 58-year-old homeless man is brought in to the emergency room by police.  His temperature is 101.8°F rectally, and he smells of cheap wine. Physical   examination is remarkable for dullness to percussion, increased vocal    fremitus, and decreased breath sounds and wet crackles on the right.     Chest x-ray reveals consolidation of the right upper lobe. One of      the nurses notes the production of thick, bloody sputum when the       man coughs. The most likely causative organism is

In the transition from a Graafian follicle to a functional corpus  luteum, which of the following cellular events occurs?

A chronic alcoholic develops severe memory loss with marked  confabulation. Deficiency of which of the following vitamins would   be most likely to contribute to the neurologic damage underlying    these symptoms?

A 62-year-old man presents to the emergency department with acute  onset of severe ocular pain accompanied by blurred vision that is   associated with halos around lights. On examination, the left eye   is red and hard; the cornea is described as having a steamy appearance,    and mydriasis is noted. The most appropriate agent for the treatment    of   this patient's acute signs and symptoms is