Unit 1.2 Feedback Loops and Homeostasis

Homeostasis

the body's ability to maintain a stable internal environment

Negative feedback loop

A mechanism that reverses a deviation from the set points.

Positive feedback loop

A mechanism that amplifies a physiological change.

Child Labor is an example of what feedback loop?
a) positive
b) negative

a) Positive

Blood clotting is an example of what feedback loop?
a) negative
b) positive

b) Positive

Blood sugar regulation is an example of what feedback loop?
a) negative
b) positive

a) Negative

Blood pressure regulation is an example of what feedback loop?
a) positive
b) negative

b) Negative

Body temperature regulation is an example of what feedback loop?
1) positive
2) negative

2) Negative

Blood calcium regulation is an example of what feedback loop?
1) negative
2) positive

1) Negative

Stimulus

A change in a physiological condition.

Receptor

Detects changes in physiological conditions.

Control Center

Compares the value to the normal range and decides on a response.

Effector

Causes a change to reverse the deviation.

Response

A reaction to a stimulus