BIOL1002 Lecture Notes - Lecture 10: Zeitgeber, Sleep Deprivation, Wound Healing
SLEEP: one of the 3 short answer topics
Example multi-choice questions
1. The time required for a complete cycle of activity – period
2. When all external cues are removed, humans will start – going to bed later and later each
night (very experimentally conditioned study)
3. Which is likely the most potent Zeitgeber (synchronises/resets your sleep cycle) – light
4. Which of the following would be most effective treatment for your friend who seems to be
suffering from Seasonal affective disorder during the winter – A trip to the tanning salon
Bad weather = bad mood
Short answer
• RESTORATIVE ROLE OF SLEEP : As well as being important for cognition, sleep is a time
for physical restoration, including:
- Repairing and renewing of tissues and nerve cells
- Neutralisation of neurotoxins
- Restoration of normal levels of chemicals throughout our body
• Wound healing is affected by sleep – sleep deprivation hinders the healing
• Sleep also affects the immune system – sleep deprived rats blood tests indicated 20%
decrease in white blood cell count, a significant change in the immune system
• Longer sleep duration correlates more positively with higher white blood count
• The rai reoes etaoli aste produts at a faster rate he its asleep tha
during an awake state
• In sleep, metabolic rates decrease and reactive oxygen species generation is reduced –
allowing restorative processes to take over.
• When we sleep we should wake up feeling refreshed and alert for our daily activities –
haig ee restored
Sleep junkies
find more resources at oneclass.com
find more resources at oneclass.com
Document Summary
Sleep: one of the 3 short answer topics. Short answer: restorative role of sleep : as well as being important for cognition, sleep is a time for physical restoration, including: Repairing and renewing of tissues and nerve cells. Longer sleep duration correlates more positively with higher white blood count: the (cid:271)rai(cid:374) re(cid:373)o(cid:448)es (cid:373)eta(cid:271)oli(cid:272) (cid:449)aste produ(cid:272)ts at a faster rate (cid:449)he(cid:374) it(cid:859)s asleep tha(cid:374) during an awake state. In sleep, metabolic rates decrease and reactive oxygen species generation is reduced allowing restorative processes to take over: when we sleep we should wake up feeling refreshed and alert for our daily activities ha(cid:448)i(cid:374)g (cid:271)ee(cid:374) (cid:858)restored(cid:859)
