Principles of Homeostasis Flashcards
1
Q
homeostasis
A
the maintenance of a state of dynamic equilibrium in the body, despite changes in the external or internal conditions
2
Q
sensors/ receptors
A
specialised cells that are sensitive to specific changes in the environment
3
Q
effectors
A
system (usually muscles or glands) that work to reverse, increase or decrease changes in a biological system
4
Q
negative feedback systems
A
systems for maintaining a condition, such as the concentration of a substance, within a narrow range; receptors detect a change in conditions and, as a result, effectors are stimulated to restore equilibrium
5
Q
positive feedback systems
A
systems in which effectors work to increase an effect that has triggered a response
