Q3: Homeostasis

Question 1

Regardless of the factor (event/variable) being regulated, all homeostatic control mechanisms are processes involving at least three components that work together. What are the three components?

Answer 1

control center,
receptor,
effector

Question 2

In ___ feedback mechanisms, the output shuts off the original effect of the stimulus or reduces its intensity.

Answer 2

negative

Question 3

In ___ feedback mechanisms, the result or response enhances the original stimulus so that the response is accelerated.

Answer 3

positive

Question 4

Homeostasis is so important that most diseases can be regarded as a result of its disturbance, a condition called ___.

Answer 4

homeostatic imbalance

Question 5

In a homeostatic control system, the ___ produces change in the variable.

Answer 5

stimulus

Question 6

In homeostatic control system, the ___ detects change.

Answer 6

receptor

Question 7

In a homeostatic control system, the ___ is information sent along efferent pathway to effector.

Answer 7

output

Question 8

Provide an example of either a positive or negative feedback mechanism that we can observe in the human body.

Answer 8

Oxytocin enhancing labor contractions is an example of positive feedback, because the response exaggerates the original stimulus.