Essay: Remember the format... be sure to IDENTIFY, DEFINE, APPLY each term.

Mary is an international flight attendant who has been having difficulty staying awake during her flights. She feels like something is wrong with her sleep habits, but she doesn't know what. All she knows is that she is fatigued all the time. She makes an appointment to see a sleep specialist during a stop in New York. Identify each of the following concepts and describe why her sleep specialist would mention each of them during Mary's appointment.

a. Insomnia
b. REM sleep
c. Sleep apnea
d. Drug abuse
e. Narcolepsy