Feedback Mechanisms Flashcards
Negative feedback loop
when the body receives a stimulus and the response decreases/counteracts the stimulus
ex) temperature regulation
Positive feedback loop
when the body receives a stimulus and increases the stimulus
ex) childbirth contractions
Stimulus
a change in the environment that causes a reaction
Signal
a message that is sent
Response
something you do after you receive a signal, a reaction to the stimulus
Levels of organization starting from cells?
cells, tissues, organs, organ systems, organism
cells (in terms of levels of organization)
the smallest and basic unit of life
tissues
a group of cells that have the same function
organs
a group of different types of tissues that work together
organ system
a group of different types of organs that perform a major function in the body
organism
any living thing