Match the terms to their definition. 1. homeostasis
any change that occurs outside of an organism that produces a response
2. negative feedback
a homeostatic response to a stimulus that slows or stops the output of a system
3. pituitary gland
any change that occurs inside of an organism that produces a response
4. stimulus
an action that is caused by a stimulus
5. response
a change in an organism's environment that produces a response
6. internal stimulus
the maintenance of a relatively constant state in the internal environment of an organism
7. external stimulus
small organ attached to the brain that links the nervous system to the endocrine system