Structure and Function of Living Systems:Question 3
Read the
statement
During labor, a hormone called oxytocin is released that intensifies and
speeds up
contractions. The increase in contractions causes more oxytocin to
be released, and the cycle
goes on until the baby is born.
Why is this considered an example of positive feedback?
Select one:
O
O
The contractions prevent other hormones from being released, which
causes the body to
readjust how it achieves homeostasis.
The pregnancy hormones released at the same time counteract negative
feedback, which then
takes the body closer back to the original set point.
The amount of oxytocin released during the contractions lowers the set
point, which then
returns the system to normal.
The release of oxytocin causes more contractions, which releases more
oxytocin, which
takes the system farther away from normal.