Preferred Label : activity cycles;
MeSH definition : Bouts of physical irritability or movement alternating with periods of quiescence.
It includes biochemical activity and hormonal activity which may be cellular. These
cycles are shorter than 24 hours and include sleep-wakefulness cycles and the periodic
activation of the digestive system.;
MeSH synonym : activity cycle; cycle, activity; cycles, activity;
MeSH hyponym : ultradian cycles;
MeSH annotation : less than 24 hours;
Origin ID : D000204;
UMLS CUI : C0001289;
Allowable qualifiers
Record concept(s)
Semantic type(s)
Bouts of physical irritability or movement alternating with periods of quiescence.
It includes biochemical activity and hormonal activity which may be cellular. These
cycles are shorter than 24 hours and include sleep-wakefulness cycles and the periodic
activation of the digestive system.