homeostasis - maintenance of a constant internal environment, negative feedback - a loop which restores a factor to a normal level, positive feedback - a response which amplifies a change, temperature regulation - an example of negative feedback, uterine contractions - an example of positive feedback, stimulus - a change in the internal or external environment, detector - something which 'notices' a change, set point - the normal level a factor should be maintained at, coordinator - triggers corrective mechanisms, effectors - e.g. muscles and glands, corrective mechanism - a response which reverses a change, nervous control - gives a quick response to stimuli, hormonal control - a slower response to stimuli, endocrine gland - secretes hormones into the bloodstream, exocrine gland - transport secretions to a surface,

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