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When a woman goes into labor during childbirth, the cervix expands which sends a signal to the pituitary gland to release oxytocin which results in more contractions which results in more oxytocin being released and so on. What is happening during childbirthWhen a woman goes into labor during childbirth, the cervix expands which sends a signal to the pituitary gland to release oxytocin which results in more contractions which results in more oxytocin being released and so on. What is happening during childbirth?

A negative feedback loop.

Cell regulation

A positive feedback loop.

A neutral feedback loop

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Lunaarchaic
The answer is C. positive feedback loop.
A positive feedback loop. 

The head of the fetus pushes against the cervix, which sends nerve impulses to the brain, which then tells the brain to stimulate the pituitary gland to secrete oxytocin, which is carried in the bloodstream to the uterus, which stimulates uterine contractions and pushes the fetus towards the cervix, causing the cycle over again until the fetus is born.
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