CCSH Prep verified actual questions and answers
2026\2027 A+ Grade
16-18 hours per day; sleep
is polyphasic.
- correct answer Newborns
14-15 hours and levels off around that value. Sleep becomes less distributed, with primary sleep at night
and nap(s) during the day.
- correct answer 16 weeks
sleep continues to decline; duration is 10-12 hours
- correct answer ages 2-5 years
sleep becomes monophasic; duration about 10 hours
- correct answer age 10
sleep duration declines sharply to 8-9 hours; circadian phase delay
- correct answer adolescence,
sleep duration is relatively
stable around 7-8 hours
- correct answer adulthood
sleep time decreases and a biphasic pattern may re-emerge; circadian phase advance
- correct answer older age
With aging there is a ______ in rhythm amplitude - circadian, endocrine and metabolic
- correct answer reduction
,From early adulthood to midlife N3 _____, replaced by N1, N2 sleep, with no significant decrease in REM
or increased sleep fragmentation.
- correct answer decreases
_____ in growth hormone (GH) parallels decrease in SW3 (N3) from midlife to late life.
- correct answer Decrease
In late life there is _____ wake at the
expense of both NREM and REM sleep.
- correct answer increased
Heart rate in REM is
Regular or irregular
- correct answer irregular
Heart rate in NREM is
Regular or irregular ?
- correct answer Regular
Respiratory rate in REM is
Regular or irregular ?
- correct answer irregular
Respiratory rate in NREM is
Regular or irregular ?
- correct answer Regular
,Blood pressure in REM is
Regular or variable?
- correct answer variable
Blood pressure in NREM is
Regular or variable?
- correct answer Regular
Skeletal muscle tone in REM is
Preserved or absent?
- correct answer absent
Skeletal muscle tone in NREM is
Preserved or absent?
- correct answer Preserved
Brain 02 consumption in REM is
Reduced or increased?
- correct answer increased
Brain 02 consumption in NREM is
Reduced or increased?
- correct answer Reduced
, Response to Co2 in REM is
Same as W or depressed?
- correct answer depressed
Response to Co2 in NREM is
Same as W or depressed?
- correct answer Same as W
Response to O2 in REM is
Same as W or depressed?
- correct answer Same as W
Response to O2 in NREM is
Same as W or depressed?
- correct answer Same as W
Penile tumescence, vaginal engorgement in REM is
Infrequent or frequent?
- correct answer frequent
Penile tumescence, vaginal engorgement in NREM is
Infrequent or frequent?
- correct answer Infrequent
2026\2027 A+ Grade
16-18 hours per day; sleep
is polyphasic.
- correct answer Newborns
14-15 hours and levels off around that value. Sleep becomes less distributed, with primary sleep at night
and nap(s) during the day.
- correct answer 16 weeks
sleep continues to decline; duration is 10-12 hours
- correct answer ages 2-5 years
sleep becomes monophasic; duration about 10 hours
- correct answer age 10
sleep duration declines sharply to 8-9 hours; circadian phase delay
- correct answer adolescence,
sleep duration is relatively
stable around 7-8 hours
- correct answer adulthood
sleep time decreases and a biphasic pattern may re-emerge; circadian phase advance
- correct answer older age
With aging there is a ______ in rhythm amplitude - circadian, endocrine and metabolic
- correct answer reduction
,From early adulthood to midlife N3 _____, replaced by N1, N2 sleep, with no significant decrease in REM
or increased sleep fragmentation.
- correct answer decreases
_____ in growth hormone (GH) parallels decrease in SW3 (N3) from midlife to late life.
- correct answer Decrease
In late life there is _____ wake at the
expense of both NREM and REM sleep.
- correct answer increased
Heart rate in REM is
Regular or irregular
- correct answer irregular
Heart rate in NREM is
Regular or irregular ?
- correct answer Regular
Respiratory rate in REM is
Regular or irregular ?
- correct answer irregular
Respiratory rate in NREM is
Regular or irregular ?
- correct answer Regular
,Blood pressure in REM is
Regular or variable?
- correct answer variable
Blood pressure in NREM is
Regular or variable?
- correct answer Regular
Skeletal muscle tone in REM is
Preserved or absent?
- correct answer absent
Skeletal muscle tone in NREM is
Preserved or absent?
- correct answer Preserved
Brain 02 consumption in REM is
Reduced or increased?
- correct answer increased
Brain 02 consumption in NREM is
Reduced or increased?
- correct answer Reduced
, Response to Co2 in REM is
Same as W or depressed?
- correct answer depressed
Response to Co2 in NREM is
Same as W or depressed?
- correct answer Same as W
Response to O2 in REM is
Same as W or depressed?
- correct answer Same as W
Response to O2 in NREM is
Same as W or depressed?
- correct answer Same as W
Penile tumescence, vaginal engorgement in REM is
Infrequent or frequent?
- correct answer frequent
Penile tumescence, vaginal engorgement in NREM is
Infrequent or frequent?
- correct answer Infrequent
