Approximately what percent of persons with chronic renal failure develop pericarditis?

Patients may have reasonable access to their radiographs if:

a. changing dentists. b. having a consult with a specialist. c. needed for litigation against the dentist. d. All of the above.

Which of the following is NOT one of the functions of the middle ear?

A. Transmitting sound vibrations B. Equalizing air pressure on both sides of the tympanic membrane C. Collecting sound waves and directing them through the auditory canal to the tympanic membrane D. Protecting the ear from potentially damaging loud noise