Feedback Loops Flashcards
What is Homeostasis?
The maintenance of the internal body environment
What is a feedback system?
A cycle of events in which the status of a body condition is continually monitored, evaluated, changed, etc
What are the parts of a feedback loop?
Receptors, Control Center, Effector and stimulus.
What is a receptor(sensor)?
A body structure that monitors change in a controlled condition and sends the input to the control center.
What is a control center?
Sets of ranges, evaluates the input, and generates output commands (Nerve impulses/chemical signals)
What is an effector?
Body structure that receives output from the control center and produces a response.
What is a stimulus?
Any disruption that causes a change
What is a negative feedback loop?
A sequence of events that returns the controlled conditions back to normal.
What is a reserve in a negative feedback loop?
A change in a controlled condition and the effect of the stimulus
What is a positive feedback loop?
The effector produces a physiological response that reinforces the initial change in the controlled condition
What is the difference between a positive and negative feedback loop?
A positive feedback loop needs to be shut off by some event outside the system and a negative feedback loop can regulate conditions in the body are stable over long periods of time
What is a disease?
A more specific term for an illness characterized by a recognizable set of signs and symptoms.
What are some examples of homeostasis in the body?
Internal body temp, blood pressure, water regulation, PH, childbirth, blood clotting etc
