| A | B |
|---|
| rhythms that occur once every 24 hours | circadian |
| rhythms that occur more than once every 24 hours | infradian |
| rhythms that occur less than once every 24 hours | ultradian |
| rhythms that occur on a seasonal basis | circannual |
| they possess 100 circadian rhythms | mammals |
| example of a circannual rhythm observed in squirrels | hibernation |
| internal biological clock | endogenous |
| external factors on biological rhytms | exogenous |
| the man that spent 6 months in a cave | michael siffre |
| location of the biological clock | hypothalamus |
| which gland secretes melatonin? | pineal gland |
| this hormone makes a person feel sleepy | melatonin |
| sweat donations were used to investigate infradian rhythms, but who by? | Russell et al (1980) |
| SAD stands for... | seasonal affective disorder |
| shiftwork research carried out by | Czeisler et al |
| Jet lag is more severe west ->east, known as | phase advance |
