Feedback Systems (Loops)

Question 1

A feedback system is a cycle of events in which the internal environment is:?

Answer 1

MONITORED
\+
EVALUATED
\+
CHANGED
\+
RE-MONITORED
\+
RE-EVALUATED

Question 2

The variable being monitored in a feedback system is referred to as?

Answer 2

CONTROLLED CONDITION

Question 3

Whatever disrupts/changes the controlled condition (whether internally or externally) is referred to as what?

Answer 3

STIMULUS

Question 4

What is a structure which monitors changes in a controlled condition called?

Answer 4

SENSOR
aka
RECEPTOR

Question 5

Sensors (receptors) detect _________, __________ and ___________ changes and send information to the control centre via transmission pathways.

Answer 5

CHEMICAL
\+
ELECTRICAL
\+
MECHANICAL

Question 6

In a feedback system, the nervous and blood vessel pathways and their signaling molecules are called?

Answer 6

TRANSMISSION PATHWAYS

Question 7

Transmission pathways relay messages between?

Answer 7

SENSOR RECEPTOR - CONTROL CENTRE
+
CONTROL CENTRE - EFFECTOR

Question 8

The control centre is comprised of the __________ and ___________ systems.

Answer 8

NERVOUS
+
ENDOCRINE

Question 9

Which part of the feedback system evaluates and compares input received from the sensor/receptor against the set range?

Answer 9

CONTROL CENTRE

Question 10

The control centre determines the body’s response to the ________ in the controlled condition.

Answer 10

CHANGE

Question 11

The control centre send the commands to the _________ via the transmission pathways.

Answer 11

EFFECTOR

Question 12

The effector is the structure that ultimately produces the response to a given _________.

Answer 12

STIMULUS

Question 13

What does breaking the feedback system cycle pose the risk of?

Answer 13

PATHOLOGY/INJURY

Question 14

When the response brings the controlled condition back to normal, it is a return to what?

Answer 14

HOMEOSTASIS

Question 15

__________ systems/loops are the body’s favourite, more common type of feedback system.

Answer 15

NEGATIVE

Question 16

Negative systems/loops function to __________ changes in the internal environment.

Answer 16

REVERSE

Question 17

Positive systems/loops function to __________ changes in the internal environment.

Answer 17

STRENGHTEN

Question 18

In uncommon, inherently unstable positive systems/loops there is some mechanism that shuts down the __________.

Answer 18

RESPONSE

Question 19

Positive systems/loops strengthen change ___________ normal.

Answer 19

AWAY FROM

Question 20

Which type of system/loop is it if blood pressure becomes too high, but the system reverses what the stimuli have caused?

Answer 20

NEGATIVE

Negates the problem

Question 21

What is the adjustment of an organism to its environment called?

Answer 21

ADAPTION

Question 22

What is the adjustment of an organism to counterbalance a defect called?

Answer 22

COMPENSATION

Question 23

As we age, the ability to maintain and efficiently return to homeostasis ___________.

Answer 23

DECREASES