Sleep + Biorhythm Flashcards
The pineal gland secretes …
Serotonin during daylight and melatonin during darkness
The human body clock is located in the …
Suprachiasmatic nudeus
The level of human alertness is in part due to the reticular activating system stimulating the brain with …
Acetylcholine
In health, the first 3 hours of sleep is mainly …
Deep sleep
Which of the following is not a feature of sleep disturbance in depression:
Long time to fall asleep, slower REM, less time in deep sleep, shorter time before first REM period
Slower REM
Which if the following hormones exhibits a circadian rhythm:
Insulin, adrenaline, cortisol, aldosterone
Cortisol
What is believed to contribute to the increased incidence of depression with ageing?
Decreased deep sleep
Assuming night-time sleeping, cortisol secretion is highest …
In the morning
Assuming night-time sleeping, cortisol secretion is lowest …
At midnight
Winter seasonal affective disorder (SAD) is believed to be due to …
Increased melatonin secretion
