The principles of Homeostasis 5.1.2

Question 1

What is negative feedback?

Answer 1

Used to maintain homeostatic balance by reducing the initial effect of the stimulus

Question 2

What do negative feedback control loops involve?

Answer 2

• Receptor involved with a stimulus
• A coordination system to transfer information between different parts of the body
• An effector - to carry out a response

Question 3

What is the outcome of a negative feedback loop?

Answer 3

• The factor/stimulus is continuously monitored
• If there is an increase in the factor, the body responds to make the factor decrease
• If there is a decrease in the factor, the body responds to make the factor increase

Question 4

What is positive feedback?

Answer 4

They enhance the effect of the original stimulus, by causing the factor to deviate even more from the normal range

Question 5

Give an example of positive feedback

Answer 5

Blood glucose concentration