Homework SourseA good example of a positive feedback mechanism would be re
A good example of a positive feedback mechanism would be ________
| regulating glucose levels in the blood |
| body temperature regulation |
| blood calcium level regulation |
| enhancement of labor contraction |
Solution
In a positive feedback loop the output is enhanced or amplified so that the controlled variable moves continuously in a direction of initial change. This can be compared with the activity of heat generated by furnace triggering the thermostat to produce more heat output from the furnace and to raise the room temperature continuously.
In our body mostly the homeostatic systems are worked on negative feedback loop but in some instances, positive feedback loop is necessary. During the child birth, the hormone oxytocin stimulates the contractions in the uterus to push the baby against the cervix (exit of uterus). Option 4 is correct.
