When swallowing food, what leaf-shaped structure prevents it from entering the respiratory tract? ...

When swallowing food, what leaf-shaped structure prevents it from entering the respiratory tract?
 
  A) Epiglottis
  B) Vallecula
  C) Pharynx
  D) Larynx

Question 2

Which one of the following patients has an isolated head injury that should be considered the MOST serious?
 
  A) 31-year-old man who is nonverbal and extends his arms and legs when you pinch the muscles on his shoulder
  B) 21-year-old man wearing a deformed motorcycle helmet who does not respond to verbal or painful stimuli
  C) 62-year-old woman who fell and hit her head and is becoming very confused and combative
  D) 53-year-old woman who fell and has a large laceration that is bleeding heavily to the back of her head

Question 3

You arrive on the scene to find a 23-year-old man unconscious. Initial attempts to ventilate are unsuccessful. What is the MOST probable cause of an airway obstruction?
 
  A) Mucous
  B) Regurgitated stomach contents
  C) The tongue
  D) Food

Question 4

Blood loss from a scalp wound:
 
  A) is severe enough to cause shock.
  B) requires vasopressor agents to control.
  C) is easy to control with pressure.
  D) is usually only minor.