Topic 1 - Sleep Flashcards
A natural state of bodily rest, a time of response and restoration that is essential to human life.
Sleep
_____ is characterized by recumbency, closed eyes, decreased movement, and reduced responsiveness to some internal and most external _______.
Sleep
Stimuli
Examples of ________ stimuli include needing to urinate or experiencing anxiety, and examples of ________ stimuli include sounds or movement.
Internal
External
T/F - During sleep, there is filtering and greater indifference to stimuli, as well as complete non-responsiveness.
False - During sleep, there is filtering and greater indifference to stimuli, BUT NOT complete non-responsiveness.
T/F - Waking up is necessary in various situations of danger or need.
True
Some stimuli are more effective _________ than others, such as hearing one’s own name, a loud noise, a baby’s cries or needing to urinate.
Awakeners
Sleep was once considered a _______ state but is now understood to be a highly regulated _____________ associated with many important body functions.
Passive
Neuroactivity
What are the 2 principal stages of sleep?
1) Non REM Sleep (NREM)
2) REM (Rapid Eye Movement) Sleep
______ sleep constitutes 75-80% of total sleep and ____ constitutes 20-25% of total sleep.
NREM
REM
______ sleep occurs in stages of increasing “depth” where eye and body _________ diminish to almost none as sleep depth increases.
NREM
Movements
T/F - REM sleep occurs in cycles with NREM sleep.
True
T/F - REM cycle lengths increase over an 8-hour sleep, with most REM occurring in the first third.
False - REM cycle lengths increase over an 8-hour sleep, with most REM occurring in the LAST third.
The body is in a strong _______________ state with slow stable vital signs during NREM sleep and body temperature _________.
Parasympathetic
Decreases
T/F - Cerebral blood flow increases during NREM sleep.
False - Cerebral blood flow DECREASES during NREM sleep.
Generalized muscle atonia that occurs during REM sleep.
Sleep Atonia (aka. Pseudo-Paralysis)
The brain is very active during ____ sleep and blood flow to it increases.
REM
During REM sleep, there are burst of rapid eye movements and _________ patterns of blood pressure, heart rate and respiration.
Irregular
T/F - People with CV disease are most susceptible to heart attacks or other emergencies in the early morning hours.
True
Fill in the blanks for the normal sleep cycle:
Wakefulness > Stage 1 NREM (_______ sleep) > Stage 2 NREM (_____ sleep) > Stage 3 - 4 - 3 NREM (____ sleep) > Stage 2 NREM > REM Sleep > __-__ Min Wakefulness Episode > Stage 1 NREM > etc. > Final REM Stage > Person Wakes Up
Shallow
Light
Deep
1-2 Min
T/F - People awakened out of REM sleep are usually foggy, confused and/or irritable.
False - People awakened out of NREM sleep are usually foggy, confused and/or irritable.
Fill in the blanks for the normal sleep ratios:
% of Total Sleep
Stage 1 NREM: up to ___%
Stage 2 NREM: ___-___%
Stage 3/4 NREM: ___%
REM: ___-___%
10%
40-50%
20%
20-25%
The NREM-REM cycle rotates every ___-____ minutes.
90-110 minutes
T/F - Stage 3/4 NREM is longer in the later part of the night.
False - Stage 3/4 NREM is longer in the EARLIER part of the night.
The first REM is about ___ minutes. As the night progresses, deep sleep stages _______ and REM stages ________.
10 minutes
Shorten
Lengthen
It is significant to note that when people get an hour or two less sleep than they should, it is ____ sleep that is most impaired.
REM
In order for sleep to be ___________, we need several complete sleep cycles each night.
Restorative
Deep sleep and REM stages are influenced by ___________ factors — if the person misses some of these sleep times, they increase once ____________ sleep is again possible.
Homeostatic
Unrestricted
