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Question 1

biological rhythms

Answer 1

cyclic changes in bodily functions that repeat themselves through time in the same order
- maintained and controlled by internal mechanism (biological block)
- circadian or ultradian rhythm

Question 2

circadian rhythms

Answer 2

changes in bodily functions over 24 hours
- sleep- wake cycle
- internally produced + influenced by external factors

Question 3

ultradian rhythm

Answer 3

bodily functions that occur in a cycle less than 24 hours
-sleep

Question 4

types of sleep

Answer 4

-NREM
- REM
- cycle of 90 minutes

Question 5

NREM sleep

Answer 5

• 4 stages
• 80%
• more at start, decreases through the night
• physical restoration of body

Question 6

stage 1

Answer 6

• first fall asleep
• relaxed state
• hypnogogic state (transition state)
• hypnic jerk
• reduced alpha - increased theta
• 5-10, lengthens
• eyes roll slowly, muscle relax, heart and breathing decrease

Question 7

stage 2

Answer 7

• 50%
• 10 -15 m, lengthens
• sleep spindles (short, rapid bursts of brain activity)
• k complexes
• eyes stop rolling, muscles relax, breathing and heart rate continue to decrease

Question 8

stage 3

Answer 8

• beginning of deep sleep
• 3-10 m
• some delta, maily theta
• less responsive to external stimuli (harder to wake)
• heart rate, breathing and body temp drop, no eye movement

Question 9

stage 4

Answer 9

• deepest stage
• mainly delta
• hard to wake (sleep inertia)
• 20- 40 m, decreases
• 10-15%
• muscles completely relaxed, no eye movement, heart rate, breathing and temp at lowest
• sleep phenomenons (sleep walking talking, night terrors)

Question 10

REM sleep

Answer 10

• eyes move rapidly
• loss of muscle tone
• vivid dreams occur
• easily woken
• 20-25% REM
• lengthen
• paradoxical sleep
• high activity within the body (luctuating heart rate, breathing)
• beta waves
• replenishes/ restoration of mind