Which of the following is a subglottic airway obstruction usually caused by the parainfluenza virus?

You have arrived on the scene of a car crash. An adult male is out of the vehicle and walking around. He says he does not need an ambulance and does not want you to assess him. You should first:

A) explain that the excitement of the collision may cause him not to notice injuries and you'd like to examine him. B) have him sign a refusal of treatment, but let him know he can call back if he changes his mind. C) obtain the patient's allergies to medications and past medical history. D) cancel the incoming EMS unit.

The process of breaking down complex substances into simpler parts is known as:

A. catabolism B.anabolism C.homeostasis D.metabolism