Feedback Systems (Loops) Flashcards
A feedback system is a cycle of events in which the internal environment is:?
MONITORED \+ EVALUATED \+ CHANGED \+ RE-MONITORED \+ RE-EVALUATED
The variable being monitored in a feedback system is referred to as?
CONTROLLED CONDITION
Whatever disrupts/changes the controlled condition (whether internally or externally) is referred to as what?
STIMULUS
What is a structure which monitors changes in a controlled condition called?
SENSOR
aka
RECEPTOR
Sensors (receptors) detect _________, __________ and ___________ changes and send information to the control centre via transmission pathways.
CHEMICAL \+ ELECTRICAL \+ MECHANICAL
In a feedback system, the nervous and blood vessel pathways and their signaling molecules are called?
TRANSMISSION PATHWAYS
Transmission pathways relay messages between?
SENSOR RECEPTOR - CONTROL CENTRE
+
CONTROL CENTRE - EFFECTOR
The control centre is comprised of the __________ and ___________ systems.
NERVOUS
+
ENDOCRINE
Which part of the feedback system evaluates and compares input received from the sensor/receptor against the set range?
CONTROL CENTRE
The control centre determines the body’s response to the ________ in the controlled condition.
CHANGE
The control centre send the commands to the _________ via the transmission pathways.
EFFECTOR
The effector is the structure that ultimately produces the response to a given _________.
STIMULUS
What does breaking the feedback system cycle pose the risk of?
PATHOLOGY/INJURY
When the response brings the controlled condition back to normal, it is a return to what?
HOMEOSTASIS
__________ systems/loops are the body’s favourite, more common type of feedback system.
NEGATIVE
Negative systems/loops function to __________ changes in the internal environment.
REVERSE
Positive systems/loops function to __________ changes in the internal environment.
STRENGHTEN
In uncommon, inherently unstable positive systems/loops there is some mechanism that shuts down the __________.
RESPONSE
Positive systems/loops strengthen change ___________ normal.
AWAY FROM
Which type of system/loop is it if blood pressure becomes too high, but the system reverses what the stimuli have caused?
NEGATIVE
Negates the problem
What is the adjustment of an organism to its environment called?
ADAPTION
What is the adjustment of an organism to counterbalance a defect called?
COMPENSATION
As we age, the ability to maintain and efficiently return to homeostasis ___________.
DECREASES
