rest and sleep Flashcards
tell me a bit about sleep
it is a basic necessity of life and is as important as air, food, water.
Individuals are sleeping less, chronic sleep loss may have adverse outcomes for health and well-being.
Insufficient sleep alters mood and decreases the
ability to concentrate, make decisions, and participate in daily activities.
explain physiology of sleep
*A cyclical physiological and behavioral process that alternates with longer periods of wakefulness
the physiology of sleep is controlled by three distinct processes, what are they?
1) Ultradian process: non–rapid eye movement (NREM) and rapid eye movement (REM)
2) Homeostatic process (process S): sleep–wake cycle
3) Circadian process (process C): maintaining wakefulness
explain circadian rhythms
- 24-hour circadian rhythm
- Factors include light, temperature, social activities, and work routines
- Biological clock
*Synchronizes sleep–wake cycles (e.g., bedtime)
*Affects individual’s optimal time of day
do hospital routines interrupt sleep?
yes
name the stages of sleep
- awake
- rem sleep
- nrem sleep
explain sleep regulation
Sleep is regulated by a sequence of physiological states integrated by central
nervous system activity (e.g., hypothalamus, anterior pituitary)
what does reticular activation system (RAS) affect
wakefulness and sleep–wake
transitions.
what does bulbar synchronizing region cause
sleep
name some benefits of sleep
Sleep is restorative => necessary for health
* During sleep (NREM), biological functions slow down = e.g. HR, RR, BP, muscle tone, urine production, hormone secretion => all
decrease
- Preserves cardiac function
- our heart rate (HR) slows down→ beating 10-26 times fewer each minute
- There is evidence that sleep improves immune function and ability to
fight disease - Cell and tissue repair
- Brain filters stored information
about the day’s activities - Without sleep, we become irritable, anxious and stressed
draw the stages of sleep
name the stages of sleep
Stage 1: Non–rapid eye movement = lightest level of sleep (2–5% of adult sleep time)
* Stage 2: Non–rapid eye movement = sound sleep (45–55% of adult sleep time)
* Stage 3: Non–rapid eye movement = deepest sleep (10% of adult sleep time)
*Rapid eye movement sleep= dreams (25% of adult sleep time)
explain sleep cycle
Presleep period (10–30 min)
- Four to five complete cycles (stages 1, 2, 3 NREM and REM) each lasting 90–120 minutes/cycle in a night
true or false Newborns and children spend more time in stage 3 NREM sleep
true
when do dreams occur
while we sleep