单词	suprachiasmatic nucleus
释义	suprachiasmatic nucleus /ˌs(j)uːprəˌkʌɪəzˈmatɪk / noun Anatomy Each of a pair of small nuclei in the hypothalamus of the brain, above the optic chiasma, thought to be concerned with the regulation of physiological circadian rhythms.In mammals it responds indirectly to light because it receives messages along fibres from nerve cells of the suprachiasmatic nucleus of the hypothalamus, which themselves receive signals from the eye via fibres of the optic nerve.... The clock, which is located in the brain in the suprachiasmatic nucleus of the hypothalamus, programs daily cyclic changes in the body, thereby creating two distinct periods, a biological day and a biological night. Within mammals a region of the hypothalamus known as the suprachiasmatic nucleus acts as a central clock regulating rhythms throughout the rest of the body.
随便看	none too —— non-Euclidean non-European non-evaluative non-event no news is good news non-excessive non-exclusive non-exclusivity non-exec non-executing non-execution non-executive non-existence non-existent non-existing non-experience non-expert nonexplosive non-exportation non-extreme non-factive non-fat non-fattening non-fatty

英语词典包含243303条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。