Dictionary > Chronobiology

Chronobiology

Definition
noun
A biological science that studies time-related phenomena in living organisms
Supplement
Chronobiology is a branch of biology concerned with biological rhythms, i.e. the time-related phenomena in living organisms. Biological rhythms are synchronized cyclic patterns observed in organisms. Examples of biological rhythms are circadian rhythms, diurnal rhythms, ultradian rhythms, and infradian rhythms. These cyclic patterns are driven by the so-called biological clock. A biological clock is one that synchronizes biological rhythm. It helps regulate the biochemical and physiological activities such as sleep and wakefulness cycle, body temperature, patterns of hormone secretion, blood pressure, digestive secretions, alertness levels, reaction times, etc.1 The biological clock that drives these cyclic patterns may be endogenous (internal) or exogenous (external). External cues involved in biological rhythms are particularly referred to as zeitgebers. Examples of these external cues are light, temperature, eating or drinking patterns, etc.
Chronobiology encompasses other fields of study such as anatomy, genetics, physiology, and behavior. Understanding biological rhythms is essential in predicting physiological and behavioral patterns of a biological system. An expert in this field is called a chronobiologist.
Word origin: chrono– + G. bios, life, + logos, study
See also:

Related form(s):

  • chronobiological (adjective)
  • Reference(s):

    1 Hedge, A. (2013). Biological Rhythms. Retrieved from ://ergo.human.cornell.edu/studentdownloads/dea3250pdfs/biorhythms.pdf


    You will also like...

    Neural Control Mechanisms
    Neural Control Mechanisms

    Neurons generate electric signals that they pass along to the other neurons or target tissues. In this tutorial, you wil..

    genes controlling growth and development
    Control of Growth & Development

    Control of Growth & Development tutorials look at how the genetic makeup determines the biological processes on a da..

    Homeostatic Mechanisms and Cellular Communication
    Homeostatic Mechanisms and Cellular Communication

    Homeostasis is the relatively stable conditions of the internal environment that result from compensatory regulatory res..

    Electromagnetic spectrum of a brain
    Sleep and Dreams – Neurology

    While learning and intelligence are associated with the functions of a conscious mind, sleep and dreams are activities o..

    Structural depiction of catalase, an enzyme
    Protein Activity and Cellular Metabolism

    Proteins have a crucial role in various biological activities. Get to know how proteins are able to perform as enzymes, ..

    Lights' Effect on Growth
    Lights’ Effect on Growth

    This tutorial elaborates on the effect of light on plant growth. It describes how different plants require different amo..

    Related Articles...

    No related articles found

    See all Related Topics