Suprachiasmatic nucleus - Wikipedia
网页The suprachiasmatic nucleus or nuclei (SCN) is a small region of the brain in the hypothalamus, situated directly above the optic chiasm. It is the principal circadian pacemaker in mammals, responsible for generating circadian rhythms .
视交叉上核 - 百度百科
网页视交叉上核或称 下丘脑 视交叉上核（suprachiasmatic nucleus, SCN）是 哺乳动物 昼夜节律调节系统的中枢结构，产生和调节睡眠—觉醒、激素、代谢和生殖等众多 生物节律 。
Neuroanatomy, Nucleus Suprachiasmatic - StatPearls - NCBI …
网页2023年7月24日 · The suprachiasmatic nucleus (SCN) is a bilateral structure located in the anterior part of the hypothalamus. It is the central pacemaker of the circadian timing system and regulates most circadian rhythms in the body. Multiple afferent neuronal tracts project to …
Suprachiasmatic Nucleus (SCN): Definition, Location, Function
网页2019年10月4日 · The suprachiasmatic nucleus (or just SCN) is a region of the brain within the hypothalamus which uses signals from the eyes to help establish and maintain the biological clock, or circadian rhythm.
Suprachiasmatic nucleus: Anatomy and function - Kenhub
网页2024年2月20日 · The suprachiasmatic nucleus consists of two key regions: ventrolateral and dorsomedial subdivisions. The ventrolateral subdivision receives direct input from the retina, which tunes it to the actual length of the day. Additionally, it receives general input from parts of the brainstem and thalamus.
The suprachiasmatic nucleus - PubMed
网页2018年8月6日 · Like it or not, your two suprachiasmatic nuclei (SCN) govern your life: from when you wake up and fall asleep, to when you feel hungry or can best concentrate. Each is composed of approximately 10,000 tightly interconnected neurons, and the pair sit astride the mid-line third ventricle of the hypoth ….
The suprachiasmatic nucleus: Current Biology - Cell Press
网页2018年8月6日 · The suprachiasmatic nuclei (SCN) are the master regulators of the mammalian circadian clock. In this primer, Patton and Hastings describe the structure of the SCN and explain how autonomous rhythms in gene expression and neural activity are generated, which ultimately control rhythmic physiology and behaviour.
Generation of circadian rhythms in the suprachiasmatic nucleus
网页2018年6月22日 · In mammals, the suprachiasmatic nucleus (SCN) of the hypothalamus acts as the principal pacemaker for circadian rhythms, which are powerful regulators of physiology and behaviour.
Suprachiasmatic Nucleus - an overview | ScienceDirect Topics
网页The Suprachiasmatic Nucleus is a small cluster of neurons located above the optic chiasm in the brain. It plays a crucial role in regulating the circadian rhythm and receives direct input from the retina via the optic chiasm. Additionally, it exhibits sexual dimorphism, with a more elongated shape in females and a more spherical shape in males.
Suprachiasmatic Nucleus: Cell Autonomy and Network Properties
网页The suprachiasmatic nucleus (SCN) is the primary circadian pacemaker in mammals. Individual SCN neurons in dispersed culture can generate independent circadian oscillations of clock gene expression and neuronal firing. However, SCN rhythmicity depends on sufficient membrane depolarization and levels of intracellular calcium and cAMP.
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