Predicting a difficult BVM mask seal uses which of the following mnemonics?

The largest muscle of mastication is referred to as

masseter. orbicularis oris. temporalis. buccinator.

Which of the following must always be the first step in protection of the reproductive organs?

a. Adequate and precise collimation of the radiographic beam to include only the anatomy of interest b. Use of gonadal shielding c. Use of a mobile protective shielding device d. Use of digital imaging equipment