Biological Rhythms & Sleep Review

What brain structure serves as the master clock for circadian rhythms?

• Amygdala

• Pineal gland

• Suprachiasmatic nucleus (SCN)

• Cerebellum

Which hormone does the pineal gland release to help you feel sleepy?

• Serotonin
  

• Melatonin

• Cortisol

• Dopamine

What is the average duration of a full sleep cycle?

• 45 minutes

• 60 minutes

• 90 minutes

• 120 minutes

Which sleep stage is known for vivid dreaming and muscle paralysis?

• Stage 1

• Stage 2

• Stage 3

• REM Sleep

What type of biological rhythm occurs on a cycle shorter than 24 hours?

• Circadian

• Ultradian

• Infradian

• Circannual

Which of the following is a potential consequence of disrupted circadian rhythms?

• Improved memory

• Mood changes

• Stronger immune system

• Decreased REM sleep only

What sleep disorder involves sudden attacks of sleep during the day?

• Sleep apnea

• Insomnia

• Narcolepsy

• Restless Legs Syndrome

Which brain structure links the endocrine system to sleep regulation?

• Hypothalamus

• Pons

• Frontal lobe

• Hippocampus

Adolescents are biologically wired to fall asleep:

• Earlier than adults

• Later than adults

• At the same time as infants

• Only after REM sleep occurs

Which tip best supports good sleep hygiene?

• Use your phone before bed to wind down

• Go to sleep and wake up at the same time every day

• Drink coffee to help you sleep better

• Watch TV in bed to fall asleep faster