Feedback Mechanims

Question 1

When does negative feedback occur

Answer 1

When the stimulus causes the corrective measures to be turned off. In doing so this tends to return the system to its optimum level

Question 2

Explain why negative feedback is important in maintaining a system at set point

Answer 2

If the info is not fed back once an effector has corrected any deviation and returned the system to the set point, the receptor will continue to stimulate the effector and an over correction will lead to deviation in the opposite direction from the original one

Question 3

Explain the advantage of having separate negative feedback mechanisms to control deviations away from normal

Answer 3

It gives a greater degree or homeostatic control

Question 4

When does positive feedback occur

Answer 4

When the feedback causes the corrective measures to remain turned on. In doing so it causes the system to deviate even more from the normal level

Question 5

Where are the thermoreceptors in the brain

Answer 5

Hypothalamus