MBB EXAM 3 UPDATED ACTUAL Questions and CORRECT Answers
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MBB
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MBB
MBB EXAM 3 UPDATED ACTUAL
Questions and CORRECT Answers
what is sleep essential for - CORRECT ANSWER- cognitive function, energy
conservation, immune response, protection against diseases, neuroplasticity, learning and
memory
what are the stages of sleep - CORRECT ANSWER- NREM-1, NREM-2, NRE...
MBB EXAM 3 UPDATED ACTUAL
Questions and CORRECT Answers
what is sleep essential for - CORRECT ANSWER✔✔- cognitive function, energy
conservation, immune response, protection against diseases, neuroplasticity, learning and
memory
what are the stages of sleep - CORRECT ANSWER✔✔- NREM-1, NREM-2, NREM-3/4,
REM
NREM-1 - CORRECT ANSWER✔✔- transition between wakefulness and sleep
NREM-2 - CORRECT ANSWER✔✔- body temperature drops, heart rate and breathing
stable, fallen asleep but not in deep sleep (majority of the sleep cycle)
NREM-3/4 - CORRECT ANSWER✔✔- memory consolidation, learning, deep-sleep (slow
wave), brain is least active here, most restorative stage
REM sleep - CORRECT ANSWER✔✔- rapid eye movement, increased brain activity, show
similar brain activity to being awake due to dreaming
circadian rhythm - CORRECT ANSWER✔✔- a daily rhythmical change in behavior or
physiological process (light serves as a zeitgeber, serving as a biological clock)
Zeitgeber - CORRECT ANSWER✔✔- a stimulus (usually the light of dawn) that resets the
biological clock that is responsible for circadian rhythms
suprachiasmatic nucleus (SCN) - CORRECT ANSWER✔✔- main biological clock that
controls the rhythms of sleeping and waking (brain region where melatonin secretion occurs)
principal circadian pacemaker in mammals (the melatonin gets secreted when it turns dark)
, what is the synthesis of melatonin controlled by - CORRECT ANSWER✔✔- the
suprachiasmatic nucleus
what inhibits melatonin synthesis - CORRECT ANSWER✔✔- light
adenosine - CORRECT ANSWER✔✔- a sleep promoting substance (blocking this chemical
would cause for wakefulness and concentration)
acetylcholine - CORRECT ANSWER✔✔- cortical activation (high levels during
wakefulness and REM sleep)
Norepinephrine - CORRECT ANSWER✔✔- arousal and sleeplessness, also involved in
mood (target for antidepressants)
serotonin - CORRECT ANSWER✔✔- modulate sleep wake cycle (also involved with mood
and target for antidepressants)
fatal familial insomnia - CORRECT ANSWER✔✔- an inherited disorder in which humans
sleep normally at the beginning of their life but in midlife stop sleeping and, 7-24 months
later, die
narcolepsy - CORRECT ANSWER✔✔- sudden sleep attacks and cataplexy, associated with
dysrefulation in orexin signaling (amphetamines are supposed to increase the CNS activity)
what is MCH associated with - CORRECT ANSWER✔✔- food intake and REM, as well as
forgetting what happens during REM sleep
what is orexin associated with - CORRECT ANSWER✔✔- food intake
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