BCHP PT 2 - HOMEOSTASIS Flashcards
Define Homeostasis.
Ongoing process keeping internal environment within limits to function
Describe a Feedback System/Loops.
Cycle of events that monitor/evaluate/change/re-monitor/re-evaluate the internal environment
Define Controlled Condition.
Varible being monitored
Define Stimulus.
Disruptions/changes in the controlled condition
What are the components of the Feedback System/Loops?
- Sensor/Receptors
- Transmission Pathways
- Control Centre
- Effector
Describe the Sensor/Receptor Component.
Monitors changes - sends info to Control Centre
Describe the Control Centre Component.
Evaluates/determines responses/sends commands if needed to Effector
Describe the Effector Component.
Produces response to a given stimulus - changing controlled condition
Describe the Transmission Pathways.
Nervous and blood vessel pathway relaying message between the Feedback System components
Physiological Feedback Systems/Loops are either _______ or _______.
Negative - Positive
Describe the Negative Feedback System/Loop.
The predominant system that reverse changes in the internal emvironment
Describe the Positive Feedback/Loop.
Strengthens changes in the internal environment
Which System/Loop is stable and unstable?
Negative - Stable
Positive - Unstable
Define ‘Adaptation’.
Adjustment of an organism to its environment
Define ‘Compensation’.
Adjustment of an organism to counterbalance a defect
