Biological Rhythms and Sleep Quiz

What are the three main categories of biological rhythms?

• Ultradian, Diurnal, Seasonal

• Circadian, Diurnal, Nocturnal

• Infradian, Diurnal, Circadian

• Circadian, Ultradian, Infradian

Circadian rhythms occur approximately every:

• 12 hours

• 24 hours

• 48 hours

• 7 days

Which type of rhythm occurs more than once each day?

• Ultradian

• Circadian

• Diurnal

• Infradian

Infradian rhythms occur:

• Once a year

• Once a month or season

• Once a week

• Once a day

Which of the following is an effect of sleep deprivation?

• Enhanced mood

• Increased energy levels

• Decreased immune efficiency

• Improved concentration

What is the role of the hypothalamus in sleep?

• It produces melatonin

• It controls breathing

• It regulates body temperature

• It monitors light/dark in the environment

Melatonin levels in the body:

• Remain constant throughout the day

• Increase during the night

• Decrease during the night

• Increase with exposure to morning light

What does an ElectroEncephaloGraph (EEG) record?

• Heart rate

• Brain waves

• Blood pressure

• Body temperature

Stage 1 sleep is characterized by:

• Rapid eye movement

• Deep sleep

• Slowed breathing and irregular brain waves

• Increased heart rate

What develops during Stage 2 sleep?

• Delta waves

• EEG spindles

• REM sleep

• Increased heart rate