maintaining a stable internal environment despite changing conditions
receptors(eg. skin receptors)detect a change in your bodys temperature
co-ordination centres(brain or spinal chord) interpret the change and organises a responce
effectors (muscles contracting or glands that release hormones) carry out the change
nervous system sends fast and precise impulses through nerves which allow us to respond to things very quickly
hormones are chemical messengers released by glands into the blood and carried to a organ or organs
the endocrine system relies on hormones(which travel through the entire body). However hormones only effect certain cells that have the right receptors.
The endocrine system is slower and longer lasting than the nervous system
negative feedback is when the body responds to a change in the environment to restore the original condition
the body needs to maintain optimal conditions for optimal enzyme action and for cells to function