Free USMLE USMLE Exam Questions

Following the rule of nines, what percent would a third degree burn to the entire arm and back cover? 

Which of the following is not a germ layer during the 3rd week of development? 

A 35-year-old man comes to the physician because of pain and swelling of his right arm where he scraped it on a tree branch 2 days ago. His temperature is 38.3°C (101°F). Examination of the right forearm shows edema around a fluctuant erythematous lesion at the site of trauma. The area is extremely tender to palpation. Which of the following is most likely the primary mechanism of the development of edema in this patient?

Which of the following toxins blocks Sodium Channels? 

A 2-hour-old female who is born at 37 weeks' gestation has purple patches on her skin as well as hepatosplenomegaly and jaundice. A CT of the head is obtained which reveals periventricular calcifications. The most likely cause of these findings is also responsible for: