The disorders related to abnormal functioning of the sleep-wake ...

[JMatthes]

The disorders related to abnormal functioning of the sleep-wake cycle or timing mechanisms of the body are called
 
  1. sleep apnea.
  2. primary sleep disorders.
  3. tertiary sleep disorders.
  4. secondary sleep disorders.

Question 2

Although all age groups can be affected, sleep disorders occur most frequently in
 
  1. adolescence.
  2. later childhood.
  3. older adulthood.
  4. middle adulthood.

[Bsand8]

Answer to Question 1

2
Primary sleep disorders are thought to be related to abnormal functioning of the sleep-wake or timing mechanisms of the body.

Answer to Question 2

3
Sleep disorders occur more frequently in elders.

[JMatthes]

YES! Correct, THANKS for helping me on my review

[irishcancer18]

Thanks for the timely response, appreciate it