homeostasis is the regulation of the internal conditions of a cell or organism to maintain optimum conditions for function in response to internal and external changes
Homeostasis maintains optimal conditions for enzyme action and all cell functions
in the human body, conditions controlled by homeostasis include:
blood glucose concentration
body temperature
water levels
what two types of responses are used in body control systems:
nervous
chemical
what 3 components do all control systems have?:
receptors
coordination centres
effectors
what is the function of a receptor?
detects a stimuli (change in environment)
what is the function of coordination centres?
receive and process information from receptors e.g. brain, spinalcord,pancreas
what is the function of an effector?
bring about responses to stimuli which restore optimum conditions
