HLTH 102 Lecture Notes - Lecture 20: Circadian Rhythm, Sleep Hygiene, Sleep Deprivation
16 Jun 2016
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Readings: early to bed, early to rise: an exploration of adolescent sleep hygiene practices (malone. *check new version of the health assessment*- new marking scheme. Circadian rhythm: 24-hour cycle by which you are accustomed to habitual behaviours (including going to sleep and waking up) - eating, bowel movements, = function of the light and dark of the environment governs this cycle. Hypothalamus (main part of the brain) and pineal body (another part of hypothalamus) keep cyclical rhythm. Responds to light and darkness in environment. Wake up= sleep need increases: restoring mental alertness, sleep need increases to a point that we need to sleep. Biphasic pattern: naturally, our body has hormones that makes us want to sleep (urge to sleep in the middle of the day) The optic nerve sees the light, connected to the suprachiasmatic nucleus in our hypothalamus (connect to the nervous system and endocrine system)= will start to send hormones to start your body.
