A circadian rhythm is a roughly 24-hour cycle in the biochemical, physiological or behavioral processes of living entities, including plants Plants are living organisms belonging to the kingdom Plantae. They include familiar organisms such as trees, herbs, bushes, grasses, vines, ferns, mosses, and green algae. The scientific study of plants, known as botany, has identified about 350,000 extant species of plants, defined as seed plants, bryophytes, ferns and fern allies. As of 2004,, animals Animals are a major group of mostly multicellular, eukaryotic organisms of the kingdom Animalia or Metazoa. Their body plan eventually becomes fixed as they develop, although some undergo a process of metamorphosis later on in their life. Most animals are motile, meaning they can move spontaneously and independently. All animals are also, fungi A fungus is a member of a large group of eukaryotic organisms that includes microorganisms such as yeasts and molds, as well as the more familiar mushrooms. The Fungi (pronounced /ˈfʌndʒaɪ/ or /ˈfʌŋɡaɪ/) are classified as a kingdom that is separate from plants, animals and bacteria. One major difference is that fungal cells have cell and cyanobacteria Cyanobacteria, also known as blue-green algae, blue-green bacteria or Cyanophyta, is a phylum of bacteria that obtain their energy through photosynthesis. The name "cyanobacteria" comes from the color of the bacteria (Greek: κυανός = blue). They are a significant component of the marine nitrogen cycle and an important primary (see bacterial circadian rhythms). The term "circadian", coined by Franz Halberg,[1] comes from the Latin Latin is an Italic language originally spoken in Latium and Ancient Rome. With the Roman conquest, Latin spread throughout the Mediterranean and a large part of Europe. Romance languages such as Catalan, French, Italian, Portuguese, Romanian, and Spanish are descended from Latin, while many others, especially European languages, have inherited and circa Circa means "in approximately" (it literally means "around"), referring to a date. It is widely used in genealogy and historical writing, when the dates of events are approximately known, "around," and diem or dies, "day", meaning literally "approximately one day." The formal study of biological temporal rhythms such as daily, tidal Tides are the rise and fall of sea levels caused by the combined effects of the rotation of the Earth and the gravitational forces exerted by the Moon and the Sun. The tides occur with a period of approximately 12 and a half hours and are influenced by the shape of the near-shore bottom, weekly, seasonal, and annual rhythms, is called chronobiology Chronobiology is a field of science that examines periodic phenomena in living organisms and their adaptation to solar and lunar related rhythms. These cycles are known as biological rhythms. "Chrono" pertains to time and "biology" pertains to the study, or science, of life. The related terms chronomics and chronome have been.
Circadian rhythms are endogenously Endogenous substances are those that originate from within an organism, tissue, or cell . Endogenous retrovirus are caused by ancient infections of germ cells in humans, mammals and other vertebrates. Their proviruses remain in the genome and are passed on to the next generation generated, and can be entrained by external cues, called zeitgebers Zeitgeber is any exogenous (external) cue that synchronizes an organism's endogenous (internal) time-keeping system (clock) to the earth's 24-hour light/dark cycle. The strongest zeitgeber, for both plants and animals, is light. Other, non-photic, zeitgebers include temperature, social interactions, pharmacological manipulation and eating/drinking, the primary one of which is daylight Daylight or the light of day is the combination of all direct and indirect sunlight outdoors during the daytime . This includes direct sunlight, diffuse sky radiation, and (often) both of these reflected from the Earth and terrestrial objects. Sunlight scattered or reflected from objects in outer space (that is, beyond the Earth's atmosphere) is.
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The Sun
It's because the shift from British Summer Time to Greenwich Mean Time can disrupt our circadian rhythm - the built-in body clock that governs our energy ...
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mcconnellift
hu, 06 Aug 2009 21:05:45 GM
asleep at round-the-clock and habitually arrives at masterpiece later than his employer s 8 am starting time. Does Dan have despair, situational insomnia, obstructive sleep apnea or a . circadian rhythm. disturbance? Or does he just ...
