Phenomena and Processes

Circadian Clocks

Biological mechanism that controls CIRCADIAN RHYTHM. Circadian clocks exist in the simplest form in cyanobacteria and as more complex systems in fungi, plants, and animals. In humans the system includes photoresponsive RETINAL GANGLION CELLS and the SUPRACHIASMATIC NUCLEUS that acts as the central oscillator.

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

Biological mechanism that controls CIRCADIAN RHYTHM. Circadian clocks exist in the simplest form in cyanobacteria and as more complex systems in fungi, plants, and animals. In humans the system includes photoresponsive RETINAL GANGLION CELLS and the SUPRACHIASMATIC NUCLEUS that acts as the central oscillator.

MeSH Record

Classification

Broader headings

Related Concepts

Knowledge Graph

Loading graph…

Drag nodes to rearrange; hover to trace links; click a node to open its page.

MeSH Record

See Also

MeSH Record

Synonyms

15 entry terms
  • Circadian Clock System
  • Circadian Timing System
  • Circadian Clock
  • Circadian Clock Systems
  • Circadian Timing Systems
  • Clock System, Circadian
  • Clock Systems, Circadian
  • Clock, Circadian
  • Clocks, Circadian
  • System, Circadian Clock
  • System, Circadian Timing
  • Systems, Circadian Clock
  • Systems, Circadian Timing
  • Timing System, Circadian
  • Timing Systems, Circadian

MeSH Record

Aspects Covered

5 allowable subheadings

Indexed with the subheadings drug effects, genetics, immunology, physiology, radiation effects.

MeSH Record

History Note

2011

MeSH Record

Previous Indexing

  • Circadian Rhythm (1967-2010)

MeSH Hierarchy

Tree Number

  1. G07.180.562.094.500w

AMA Style

References

  1. National Library of Medicine. Circadian Clocks. Medical Subject Headings (MeSH). 2026. Unique ID D057906. http://id.nlm.nih.gov/mesh/2026/D057906
  2. Circadian Clocks. In: Wikipedia. https://en.wikipedia.org/wiki/Circadian_clock
  3. Circadian Clocks. In: Wikidata. https://www.wikidata.org/wiki/Q5121352