A 20-year-old Caucasian male checked into a local clinic after hiking in the foothills of Southern California.  He described that the hike was four days earlier and that he left the trail and had to bush whack through the desert shrubbery at times. He complained of an itchy red vesicular rash across his chest. Which one of the following hypersensitivities might explain this reaction?

Most pericarditis is caused by which one of the following?

In typical cases of hyperthyroidism, the thyroid gland is enlarged.

The normal prostate is about the size of an orange.

The motor unit of the neuromuscular system is composed of which of the following?

The urinary system can be summed up by to following sequence of function.

Which of the following is the principal cause of most chronic pancreatitis?

“Myositis” is a term reserved for disease in which muscle inflammation is present.

Diabetes mellitus is best defined as which one of the following?

The most common symptom associated with liver disease is which of the following?