Biology / Bio 2751 · Atom · ~20 seconds
Positive Feedback Loop
Video not yet published
to the StudyWalks catalog
to the StudyWalks catalog
State
A positive feedback loop amplifies a stimulus in its original direction rather than reversing it, and is rare in animal bodies compared with negative feedback.
Show
Rising oxytocin during childbirth strengthens uterine contractions further, rather than damping them, until delivery is complete.
Watch for
Positive feedback needs a natural endpoint built in, since nothing in the loop itself reverses the direction.