Which of the following refers to the study of the nature and cause of disease?

Each of the following statements regarding fundamentals of panoramic radiography is correct EXCEPT one. Which one is the EXCEPTION?

a. The rotational center is the axis on which the tube head and the cassette rotate. b. The x-ray source and the film remain stationary. c. They are based on the principles of tomography. d. The x-rays emerge from a narrow, vertical slit in the tube head.

Which term best defines an intermediate fetal death?

A) 500 grams or less B) 500 grams or less, before 20 weeks gestation C) 501 to 1000 grams D) 1001 grams or more, after 20 weeks gestation