34 Rest and Sleep

Question 1

Rest

Answer 1

condition in which body is in DECREASED state of activity, w consequent feeling of being refreshed

Question 2

Sleep

Answer 2

state of REST accompanied by altered consciousness + relative INACTIVITY

Question 3

which part of the brain controls the cyclic nature of sleep?

Answer 3

BRAINSTEM has 2 systems:
1 RAS
2 Bulbar Synchronizing Region

Question 4

RAS

Answer 4

“reticular activating system”

-facilitates REFLEX + VOLUNTARY MVMT, + cortical activities r/t STATE OF ALERTNESS

Question 5

where is RAS?

Answer 5

extends fr brainstem up to medulla, pons, midbrain, + to hypothalamus

Question 6

RAS activity sleep vs wake

Answer 6

sleep: RAS experiences few stimuli
wake: occurs when system is activated w stimuli fr cerebral cortex + periphery of body

Question 7

Melatonin

Answer 7

hormone thought to regulate sleep-wake cycle + circadian rhythm

Question 8

one of the most complex biological rhythms

Answer 8

sleep

Question 9

2 major stages of sleep

Answer 9

1 NREM

2 REM

Question 10

NREM

Answer 10

“non rapid eye mvmt”

-75% of sleep time

Question 11

4 stages of NREM

Answer 11

1+2: LIGHT sleep states; can be aroused w ease

3+4: each 10% of sleep, DEEP sleep, DELTA sleep, or SLOW-WAVE sleep

Question 12

the arousal threshold is the greatest in which stage of NREM?

Answer 12

stage 4

Question 13

which nervous system dominates in NREM sleep?

Answer 13

parasympathetic nervous system

-decr in BP, resp rate, pulse, temp, metab rate.

Question 14

which is more difficult to arouse? a person in NREM or REM?

Answer 14

REM is most difficult to arouse

Question 15

REM

Answer 15

• 25% of sleep
• if awaken from this period, they are more likely to remember their dreams
• paradoxyl

Question 16

REM vital signs

Answer 16

incr in pulse, resp rate, BP, metab, temp

-depression in general muscle tone + tendon

Question 17

REM is believed to be essential for…

Answer 17

mental + emo equilibrium,
learning,
memory,
adaptation

Question 18

sleep cycle sequence

Answer 18

NREM1>
NREM2>
NREM3>
NREM2>
REM>
NREM2>repeat

Question 19

NREM 1 +2

Answer 19

theta waves 50-55

Question 20

hypothalamus

Answer 20

circ rhythm
sleep/wake
temp

Question 21

carb

Answer 21

food coma. good for sleep