Which of the following observations of a female client in a sleep ...

[Coya19@aol.com]

Which of the following observations of a female client in a sleep lab would indicate the clinicians that she is in REM sleep?
 
  A)
  Rolling eye movements are observed, and she has moderate muscle activity.
  B)
  Her motor movements are suppressed, and muscle tone is flaccid.
  C)
  Delta waves are evident on her EEG, and the heart and respiration rates are slowed.
  D)
  She has a low level of cerebral activity, and her EEG indicates low voltage and mixed frequencies.

Question 2

During descent, an airplane passenger is complaining that his ears are plugged. What aspect of the structure and function of the ear best accounts for the passenger's complaint?
 
  A)
  The inner ear adjusts its volume in response to atmospheric pressure, increasing during low pressure and decreasing in high pressure.
  B)
  The eustachian tubes must remain patent to equalize pressure between the middle ear and inner ear.
  C)
  The tympanic membrane is selectively permeable in order to accommodate pressure changes, and this capacity is often impaired during upper respiratory infections.
  D)
  Air must be able to flow between the middle ear and nasopharynx in order to accommodate pressure changes.

[juliaf]

Answer to Question 1

Ans:
B

Feedback:

REM sleep is accompanied by low levels of muscle movement and loss of muscle tone. Rolling eye movements, delta waves, and low levels of cerebral activity are associated with stages 1 through 4 of sleep.

Answer to Question 2

Ans:
D

Feedback:

The eustachian tubes between the middle ear and nasopharynx must be patent to allow for changes in atmospheric pressure. Pressure is not accommodated by changing the volume of the middle ear, and the tympanic membrane is not selectively permeable to air.

[Coya19@aol.com]

Excellent

[amcvicar]

TYSM