Nitrogen narcosis is a condition that affects divers at depths greater than 100 feet. Which of the ...

Nitrogen narcosis is a condition that affects divers at depths greater than 100 feet. Which of the following signs and symptoms is typical of nitrogen narcosis?
 
  a. Muscle cramping
  b. Altered consciousness/impaired judgment
  c. Hyperventilation
  d. Apnea

Question 2

Trauma from a dive injury that results in tissue damage within any air-filled structure of the body is called:
 
  a. internal dive trauma.
  b. a decompression injury.
  c. upper pressure trauma.
  d. barotrauma.

Question 3

When arterial gas embolism (AGE) occurs, the gas within the lungs:
 
  a. causes an open pneumothorax.
  b. causes the trachea to close.
  c. contracts, and the bronchioles start to spasm.
  d. expands, rupturing alveoli.

Question 4

Boyle's law states that the volume of a gas is proportional to the pressure exerted by that gas when the temperature is constant. Thus, as one descends:
 
  a. pressure in the chest cavity decreases.
  b. pressure in the chest cavity increases.
  c. the oxygen level in the lungs increases to 32 percent.
  d. the carbon dioxide level in the lung increases to10 percent.

Question 5

The cause of AGE is:
 
  a. a rapid descent by a diver.
  b. a rapid ascent by a diver.
  c. diving below 100 feet.
  d. diving below 100 feet for longer than 30 minutes.