Which of the following terms describes the grayish slough found on the gingival tissue in NUG?

Which of the following describes placing a patient in Trendelenburg position?

the patient's feet are positioned lower than the head the patient is placed upright the patient's head is positioned lower than the feet the patient is placed on their left lateral side

When filling a portable reservoir from a liquid reservoir for home use, you should be cautious because:

A) it will spontaneously ignite B) it will not last as long as compressed oxygen in a cylinder C) it is at a -183 degrees Celsius D) it is under very high pressure