Homeostasis

Homeostasis

the process of maintaining the internal environment

positive feedback loop

identifies a change and pushes for it to continue

positive feedback loop example

pregnancy - cells push o develop

negative feedback loop

identifies a change in the internal environment and works to counteract it, constantly changing

negative feedback loop example

increased temperature - cells push to change

stimulus

anything that triggers a behavioural or physical change

receptor

detects the change and sends information to the control centre

control centre

a cell or organ that decides what to do about the stimulus then sends a message to the effector

effector

organ that responds to the stimulus

response

physical action carried out, caused by the effector, to counteract the stimulus

example diagram

effector - sweat glands

response - sweating to cool down the skin