Question

3. Negative feedback loops (choose all correct) (10 pts)

A) Are homeostatic

B) End with a response that opposes the stimulus

C) Are the same thing as response loops

D) Anticipate the change and prevent a disturbance

Answer 1

Answer

Negative feedback loops :

• Are homeostatic
• End with a response that opposes the stimulus

- There are two types of feedback loops. A response loop can either lead to negative feedback or positive feedback.

- In negative feedback, the response leads to inhibition of original stimulus.
- Homeostasis in the body is maintained through negative feedback loop.

Example :
- Increased blood calcium levels triggers release of calcitonin.
- Calcitonin increases bone formation.
- Blood calcium levels decrease back to normal.

Option A and B