Pineal gland synthesizes the hormone melatonin,which is important for sleep.
pineal gland
the circadian rhythm
The pineal gland. Descartes had a lot of funny ideas about the pineal gland. The pineal gland, which is an endocrine gland, secretes melatonin, a regulatory hormone that is responsible for the sleep-wake cycle (circadian rhythm). http://plato.stanford.edu/entries/pineal-gland/
The term circadian comes from the Latin words circa which means "around" and dies which means "day". The term circadian rhythm refers to the biochemical processes of an organism that occur over the duration of 24 hours. A circadian rhythm disorder is any disruption in a person's circadian rhythm.
Humans have a circadian rhythm that controls sleep and wakefulness.
The basic rhythm of breathing is controlled by part of the brain called the Medulla.
Circadian Rhythm.
The pineal body which is located posterior to the hypothalamus is a smooth, fingertip-shaped tissue that secretes the hormone melatonin. It maintains the body's internal clock and the 24-hour wake-sleep cycle and regulates the onset and duration of sleep.
One can find information on circadian rhythm in the Music Making Today magazine. This magazine has a lot of different articles and information on this topic.
Circadian Rhythm is a 24 hour cycle in the physiological, behavioral or biochemical processes of living beings, including humans, animals, plants and micro-organisms. Although circadian rhythms are endogenous to the living being, they are affected by external triggers, such as light. To classify a rhythm as circadian, it should persist in the absence of external cues, should persist over a range of temperatures, and should be possible to adjust to local time. The impact of circadian rhythm can be seen in the patterns of a variety of activities such as eating, sleeping, brain activity, temperature, hormone production and cell regeneration. The importance of circadian rhythm in psychology stems from the fact that disturbances in this rhythm can lead to disorders such as Delayed Sleep Phase Syndrome (DSPS), fatigue, disorientation and insomnia. Other disorders such as bipolar disorder and sleep disorders are associated with irregular function of the circadian rhythm.
circadian rhythm.
Circadian