circadian rhythm

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Related to Circadian clock: biological clock

circadian rhythm:

see rhythm, biologicalrhythm, biological,
or biorhythm,
cyclic pattern of physiological changes or changes in activity in living organisms, most often synchronized with daily, monthly, or annual cyclical changes in the environment.
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circadian rhythm

[sər′kād·ē·ən ′rith·əm]
(physiology)
A self-sustained cycle of physiological changes that occurs over an approximately 24-hour cycle, generally synchronized to light-dark cycles in an organism's environment.
References in periodicals archive ?
Some shift workers maintain unconventional hours to pay the rent, which puts them at odds with their circadian clocks.
The description of hormonal rhythms is accurate if superficial and does add to a fuller physiologic understanding of the many feedback loops controlled by circadian clocks.
Nevertheless, a completely different experimental approach ultimately led to the identification of molecular circadian clock components.
Mammals are more difficult to study because mothers pass various substances to their offspring which could affect the foetal circadian clock.
We therefore conclude that this species contains an endogenous circadian clock with an output pathway to the neural circuit controlling swimming behavior.
Your sleep cycle is primarily regulated by circadian clocks that drive rhythmic fluctuations in hormone levels.
Several lines of evidence argue against flight from light as the common force propelling the evolution of circadian clocks, says O'Neill, one of the scientists rewriting the circadian clock origin story.
By recording and analyzing the animals' running activity, the scientists were able to study the rhythms of the circadian clock in the mutant mice.
To understand how a circadian clock might operate in intestinal stem cells, the scientists bred mutant flies to lack the period gene.
Circadian clock gene polymorphisms in alcohol use disorders and alcohol consumption.
A significant association was identified between alterations in the RAR-related orphan receptor beta (RORB) gene, one of the circadian clock genes, and having bipolar disorder.
Research indicates that many aspects of our health are directly connected to our body's inner circadian clock.