circadian

Examples of circadian in the following topics:

• Functions of the Diencephalon

  • The hypothalamus controls body temperature, hunger, thirst, fatigue, sleep, and circadian cycles.
  • Some functions of its components include the secretion of melatonin by the pineal gland (involved in circadian rhythms) and regulation of motor pathways and emotions.

• Epithalamus and Pineal Gland

  • Some functions of its components include the secretion of melatonin by the pineal gland (involved in circadian rhythms) and regulation of motor pathways and emotions.

• Catabolic-Anabolic Steady State

  • The balance between anabolism and catabolism is also regulated by circadian rhythms, with processes such as glucose metabolism fluctuating to match an animal's normal periods of activity throughout the day.

• Seasonal Affective Disorder and Jet Lag

  • Bright light therapy is a treatment for SAD and circadian rhythm disorders.

• Pituitary Gland Disorders

  • The hypothalamus secretes a number of hormones, often according to a circadian rhythm, into blood vessels that supply the anterior pituitary; most of these are stimulatory (thyrotropin-releasing hormone, corticotropin-releasing hormone, gonadotropin-releasing hormone and growth hormone-releasing hormone), apart from dopamine, which suppresses prolactin production.

• Uterus

  • Depending on the species and attributes of physical and psychological health, weight, environmental factors of circadian rhythm, photoperiodism (the physiological reaction of organisms to the length of day or night), the effect of menstrual cycles to the reproductive function of the uterus is subject to hormone production, cell regeneration, and other biological activities.

• Homeostatic Control

  • The most important example is the hypothalamus, a region of the brain that controls everything from body temperature to heart rate, blood pressure, satiety (fullness), and circadian rhythms (sleep and wake cycles).

• Hypothalamus

  • The hypothalamus coordinates hormonal and behavioral circadian rhythms, complex patterns of neuroendocrine outputs, complex homeostatic mechanisms, and important behaviors.

• Sensory Modalities

  • One particular component, the suprachiasmatic nucleus, is responsible for the circadian (daily) rhythm, while other cell clusters appear capable of shorter-range (ultradian) timekeeping.