circadian rhythm
(redirected from Human clock)

Also found in: Dictionary/thesaurus, Medical, Wikipedia

0.03 sec.

circadian rhythm: see rhythm, biological rhythm, biological, 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.
..... Click the link for more information. .

circadian rhythm

Inherent cycle of approximately 24 hours in length that appears to control or initiate various biological processes, including sleep, wakefulness, and digestive and hormonal activity. The natural signal for the circadian pattern is the change from darkness to light. The controlling mechanism for these cyclic processes within the body is thought to be the hypothalamus. Any change in the circadian cycle (such as jet lag and other conditions associated with travel) requires a certain period for readjustment.

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.

Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content.

?Page tools

Printer friendly
Cite / link

Feedback

Mentioned in	?		References in periodicals archive	?		Encyclopedia browser	?		Full browser	?
No references found			The plant photolyase structure provides a much better model to use to study how the cryptochrome proteins in the human clock function than we have ever had before," says Dr. Scientists model 3D structures of body clock-controlling proteins by Asian News International org CAPTION(S): PEACE CONFERENCE: Youngsters form a human clock outside the Gala Theatre in Durham to mark out Peace in our Time. Youngsters mark out peace in our time by The Journal (Newcastle, England) YOUNGSTERS made a plea for peace in our time by forming a human clock in Durham. TICKED OFF WITH WAR by Evening Chronicle (Newcastle, England)			Hull, Clark L. Hull, Clark Leonard Hull, Cordell Hull, Isaac Hull, John Hull, William hulless buckwheat Hulling Mill Hulman, Tony Hulse, Russell A. Hulse, Russell Alan hulsite Hulun Hulutao Hulwan Hum hum bar hum modulation hum-bucking coil huma Huma Ho human human authentication human biogeography human chorionic gonadotropin Human clock human community Human Constitution human ecology human engineering human evolution Human Factors Human Genetics Human Genome Project human geography human granulocytic ehrlichiosis human growth hormone human immunodeficiency virus Human Interface Device Human Interface Technology Laboratory human leukocyte antigen human measles immune serum Human Migration Human Morphology human myeloma protein human nature human papillomavirus Human Relations Theory human resources human rights human sacrifice			Human child Human child human chorion gonadotropin beta subunit human chorionic gonadotrophin human chorionic gonadotrophin human chorionic gonadotrophin human chorionic gonadotropin human chorionic gonadotropin human chorionic gonadotropin human chorionic gonadotropin Human Chorionic Gonadotropin Associated Factor Human Chorionic Gonadotropin Pregnancy Test Human Chorionic Gonadotropin Receptor Human Chorionic Gonadotropin-Like Substance human chorionic somatomammotropic hormone Human chorionic somatomammotropin Human chorionic somatomammotropin Human chorionic somatomammotropin Human Chorionic Somatotropin human chorionic sommatomammotropin Human chromosome Human chromosome Human chromosome Human Chromosome 4 human ciliary muscle cells Human Ciliary Smooth Muscle Human circulatory system Human circulatory system Human circulatory system Human Click Human clock Human clone Human cloning Human cloning Human Cock-Fighting Human Cognition Research Laboratory Human Cognitive Neuroscience Unit Human Cognitive Reliability Human Colon Cancer Cell Line Human Combinatorial Antibody Library Human Communication Research Centre Human Communications Human Communications Group Human Communications Science human community Human Companion Animal Bonding Human Complement 3 Human Complex System Human computer interaction Human Computer Interaction Consortium Human Computer Interaction Design Human Computer Interface Human Computer Interface Laboratory Human Computer International Human Concentrative Nucleoside Transporter Human Concern International

Encyclopedia

Free Tools:	For surfers: Free toolbar & extensions \| Word of the Day \| Help For webmasters: Free content \| Linking \| Lookup box \| Double-click lookup

Disclaimer
All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional.

circadian rhythm (redirected from Human clock)

circadian rhythm

circadian rhythm
(redirected from Human clock)