________ The main part of the digestive system is the digestive tract

Upon finding an unconscious patient at the scene of a bad accident, your next step should be to:

a. assume "implied consent" and begin to examine and treat the patient. b. delay your examination and ask other patrollers to respond as witnesses. c. delay your examination until you can locate a spouse or a friend of the patient. d. begin your assessment but not provide any treatment until another patroller arrives.

Oxygen therapy is indicated in the sub-acute or home setting for adults with:

I. PaO2 < 55 mmHg II. SpO2 < 88% III. hypoxemia in association with cor pulmonale IV. pulmonary hypertension A) I B) I and II C) I, II, and III D) I, II, III, and IV