_ “人 當還厂歷芭人還U4本上一己人>名>4 Kwan ee, 計S
mamnmtained by negative feedback, which helps
tfo retfurn a variable to either anormal rangqe or
asSet pojnt
Most homeostatic control systems function by
negative feedback, where buildup of the end
product shuts the system off
>osftive feedback loops occur in animals, but
jo not usually contribute to homeostasis