NUR 2206 FINAL EXAM A

NUR 2206 FINAL EXAM A

• Rest

Answer

• Decreased state of activity

• Leads to being refreshed

• Sleep

Answer

• Rest with altered state of consciousness

• Varying degrees of stimuli produce wakefulness

• Sleep is characterized by...

Answer Rejuvinate time for our body & mind

• minimum physical activity
• decreased responsiveness
• behavioral state of rest for the mind and body

• cyclic

circadian rhythm

• Purpose of Sleep

Answer

• physical well being

• stress and anxiety
• concentrate

helps us get "back in the game"

• Bulbar synchronizing region (BSR) work with... 1 / 3

Answer Reticular activating system (RAS) which are nerve fibers that originate in the medulla (brainstem) and travel up the pons, midbrain and into hypothalamus

RAS controls reflex & voluntary movements, activities related to wakefulness, but during sleep RAS receives FEW stimuli

• What are needed for sleep/wake cycle?

Answer neurotransmitters

• Wakefulness neurotransmitters

Answer norepinephrine, acetylcholine, dopamine, glu- tamate and histamine

• Sleep neurotransmitters

Answer GABA and serotonin

• What is melatonin involved in?

Answer Sleep/wake cycles and may influence metab- olism and glucose homeostasis

• Percentages of stages of sleep

Answer

NREM = 75% REM = 25%

• Non-Rapid Eye Movement (NREM) Sleep

Answer 75% of total sleep Parasympathetic nervous system dominates (Rest & Digest) Characteristics 2 / 3

• lower temp, HR, RR, BP, metabolic rate
• profound restfulness
• slow, rolling eye movements
• muscle relaxation
• decreased seizure threshold (at risk for getting seizures)

• How many stages in NREM sleep?

Answer

• stages.

• Stage 1 (5%) and 2 (50%)

light sleep, easily aroused

• Stage 3 (10%) and 4 (10%)

deep, restful sleep (delta sleep or slow wave sleep) & difficult to arouse

• Stage 1 NREM

Answer Light

• transitional stage drift from wakefulness to sleep
• lasts 5 mins
• person feels drowsy & relaxed
• can be easily awakened
• eyes roll from side to side
• involuntary muscle jerking
• HR and RR decreased slightly

• Stage 2 NREM

Answer Light

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