Circadian Rhythms

Sleep-wake cycle

• a shortage of sleep that leads to tiredness and to other health problems

• A hormone manufactured by the pineal gland that produces sleepiness.

• a daily, naturally occurring 24-hour circadian rhythm of sleep and wake states regulated by a biological clock

• Abnormal behaviors such as nightmares or sleepwalking that occur during sleep.

the biological clock; regular bodily rhythms that occur on a 24-hour cycle

• REM sleep

• night light

• sleep apnea

• circadian rhythm

A hormone manufactured by the pineal gland that produces sleepiness.

• Caffeine

• Tryptophan

• Parasomnias

• Melatonin

Tags

NGSS.HS-LS1-3

Refer to the handout provided to complete the concept map in the right order: estivation, hibernation, biological clock, migration, circadian rhythms, seasonal behaviors

• estivation, seasonal behaviors, circadian rhythms, biological clock,migration, seasonal behaviors, hibernation

• biological clock, circadian rhythms,seasonal behaviors, estivation, migration, hibernation

• hibernation, seasonal behaviors, estivation, biological clock,migration, circadian rhythms

circadian rhythms

•  fatigue that people feel after changing time zones when they travel

• active stage of sleep during which your breathing changes, your heart rate and blood pressure rise, and your eyes dart around rapidly.

• pattern of sleeping in a 24-hour period

• naturally occurring physical, behavioral, and mental changes in the body that typically follow the 24-hour cycle of the sun

What is the term used to describe the internal process that regulates the sleep-wake cycle and repeats roughly every 24 hours?

• Homeostasis

• Metabolism

• Circadian rhythm

• Diurnal cycle

Tags

NGSS.HS-LS1-3

Which animal is not affected by 24 hours of darkness nor 24 hours of light?

• Grunion

• Humans

• Frogs

• Arctic squirrels

Which of the following is a daily response?

• circadian rhythms

• migration

• hibernation

• dormancy

Owls are awake at night and asleep during the day. What kind of circadian rhythm do they follow?

• Nocturnal

• Diurnal

• Dormancy

• Hibernation

The daily cycle that living organisms experience is called

• circadian rhythm

• hibernation

• phototropism

• dormancy