CCSH Verified Questions And Answers With Verified Updates
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Course
CCSH
Institution
CCSH
Nocturnal urine - during sleep, nocturnal urine volume decreases due to decrease of glomerular
filtraton, alteration of renin release, water re-absorption
Infant sleep - - Not born with same sleep functions as adults.
- Sleep stages are not fully developed.
- Quite sleep- NREM like
- Active Sl...
CCSH
Nocturnal urine - during sleep, nocturnal urine volume decreases due to decrease of glomerular
filtraton, alteration of renin release, water re-absorption
Infant sleep - - Not born with same sleep functions as adults.
- Sleep stages are not fully developed.
- Quite sleep- NREM like
- Active Sleep- REM like
- Indeterminate sleep (mixed)
What controls the sleep-wake cycle? - It is primarily controlled by the interaction of the Sleep
Homeostatic Drive (Accumulation of adenosine and "somnogens" such as cytokines) and the Intrinsic
Circadian Timekeeping System (The effect of light and darkness on the sleep wake cycle and timely
release of hormones)
How many types of sleep are there? - There are two. NREM and REM
NREM is broken into how many stages? - 3 stages.
-N1 which is light sleep. Usually the first stage of sleep.
- N2 still fairly light sleep and covers the majority of sleep we get during the night.
- N3 Deep Sleep (AKA slow wave sleep)
Physiological Variables in NREM sleep - - Heart rate is regular
- Respiratory rate is regular
- BP is regular
- Skeletal muscle tone is preserved
- Brain O2 consumption is reduced.
- Response to CO2 is the same as wake
, - Response to O2 is the same as W
- Penile tumescence, vaginal engorgement is infrequent
- Temperature is homeothermic
Homeothermic - having a body temperature that is constant and largely independent of the
temperature of its surroundings. Stable body temperature of about 98.6F/ 37 C
Physiological variables during REM sleep - - Heart rate is irregular
- Respiratory Rate is irregular
- Blood Pressure is variable
- Skeletal muscle tone is absent
- Brain O2 consumption is increased
- Response to CO2 is depressed
- Response to O2 is same as W
- Penile tumescence, vaginal engorgement is frequent
- Temperature is poikilothermic.
Poikilothermic - Body temperature varies with environmental temperature.
How many sleep cycles can we go through in one night? - in a typical night, one may go through 4-
5 cycles of sleep.
When does the majority of deep sleep occur? - Early in the sleep period (first third of the night).
Periods of REM sleep - Periods of REM sleep are initially short, but become longer in duration as
the night progresses.
What is NREM sleep believed to be for? - NREM sleep is believed to help restore the body/
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