Sleep and fatique - Kafli 11

Question 1

How long is a free running circadian rhythm?

Answer 1

25 hours

Question 2

What does the duration of sleep depend on?

a. The mental and physical exercise taken prior to sleep
b. The number of hours awake prior to sleep
c. Timing i.e. when the body temperature is falling
d. The quality of the REM sleep

Answer 2

c. Timing i.e. when the body temperature is falling

Question 3

What is the maximum number of “sleep credits” that can be accumulated and what is the minimum time to accumulate them?

Answer 3

16 credits, 8 hours.

Question 4

When does orthodox (slow wave sleep) occur and what does it restore?

a. It occurs early in the sleep cycle - stages 3 & 4 and it restores the body
b. It occurs early in the sleep cycle - stages 3 & 4 and it restores the brain
c. It occurs early in the sleep cycle - stages 1 & 2 and it restores the body
d. It occurs late in the sleep cycle - stages 3 & 4 and it restores the brain

Answer 4

a. It occurs early in the sleep cycle - stages 3 & 4 and it restores the body.

Question 5

Insomnia is divided into:

a. psychological and physiological
b. mental and physical
c. clinical and situational
d. clinical and physiological

Answer 5

c. clinical and situational