suprachiasmatic nucleus
noun
su·pra·chi·as·mat·ic nucleus
ˌsü-prə-ˌkī-əz-ˈma-tik- 
: either of a pair of neuron clusters in the hypothalamus situated directly above the optic chiasma that receive photic input from the retina via the optic nerve and that regulate the body's circadian rhythms
Examples of suprachiasmatic nucleus in a Sentence
Recent Examples on the Web
Your circadian rhythm – the internal clock that dictates the sleep/wake cycle – is controlled by the suprachiasmatic nucleus (SCN).
—
Michael Williams, Discover Magazine, 30 Aug. 2021
In vertebrates, a master clock is located in the awesome-sounding suprachiasmatic nucleus, a tiny region of brain cells in the hypothalamus.
—Dan Hurley, Discover Magazine, 4 Nov. 2016
Our circadian cycle is controlled by a network of cells in the suprachiasmatic nucleus in our brain that are calibrated by cycles of light and dark.
—Nathaniel Scharping, Discover Magazine, 14 July 2016
Our circadian rhythms are regulated by what scientists call our master circadian clock, located in a region of the brain called the suprachiasmatic nucleus, in the hypothalamus.
—Nathaniel Scharping, Discover Magazine, 13 June 2021
The circadian rhythm is present in every single cell of your body, guided by the central clock that resides in the suprachiasmatic nucleus region of the brain.
—Rosemary Braun, Discover Magazine, 12 Sep. 2018
This is because the retina is in direct communication with the suprachiasmatic nucleus, which is the part of the brain that schedules the release of hormones assisting in wakefulness (cortisol) and sleep (dopamine).
—Mackenzie Wagoner, Vogue, 18 Oct. 2022
Tucked within the human brain’s hypothalamus, the suprachiasmatic nucleus (SCN) is responsible for tracking the body’s time.
—Joshua Hawkins, BGR, 20 Sep. 2022
The suprachiasmatic nucleus is wired directly to the retina, and in the 1980s, it was confirmed that the brain clock could be calibrated by sunlight or artificial light, which signals when it’s daytime.
—New York Times, 6 July 2022
Michael Williams, Discover Magazine, 30 Aug. 2021
In vertebrates, a master clock is located in the awesome-sounding suprachiasmatic nucleus, a tiny region of brain cells in the hypothalamus.
—Dan Hurley, Discover Magazine, 4 Nov. 2016
Our circadian cycle is controlled by a network of cells in the suprachiasmatic nucleus in our brain that are calibrated by cycles of light and dark.
—Nathaniel Scharping, Discover Magazine, 14 July 2016
Our circadian rhythms are regulated by what scientists call our master circadian clock, located in a region of the brain called the suprachiasmatic nucleus, in the hypothalamus.
—Nathaniel Scharping, Discover Magazine, 13 June 2021
The circadian rhythm is present in every single cell of your body, guided by the central clock that resides in the suprachiasmatic nucleus region of the brain.
—Rosemary Braun, Discover Magazine, 12 Sep. 2018
This is because the retina is in direct communication with the suprachiasmatic nucleus, which is the part of the brain that schedules the release of hormones assisting in wakefulness (cortisol) and sleep (dopamine).
—Mackenzie Wagoner, Vogue, 18 Oct. 2022
Tucked within the human brain’s hypothalamus, the suprachiasmatic nucleus (SCN) is responsible for tracking the body’s time.
—Joshua Hawkins, BGR, 20 Sep. 2022
The suprachiasmatic nucleus is wired directly to the retina, and in the 1980s, it was confirmed that the brain clock could be calibrated by sunlight or artificial light, which signals when it’s daytime.
—New York Times, 6 July 2022
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'suprachiasmatic nucleus.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Dictionary Entries Near suprachiasmatic nucleus
Cite this Entry
“Suprachiasmatic nucleus.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/suprachiasmatic%20nucleus. Accessed 24 Apr. 2024.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share