The hormone ____ is involved in a positive feedback cycle that results in strong uterine contractions during labor.
A) estrogen
B) oxytocin
C) cortisol
D) progesterone
E) prolactin

Question

The hormone ____ is involved in a positive feedback cycle that results in strong uterine contractions during labor.  
A) estrogen
B) oxytocin
C) cortisol
D) progesterone
E) prolactin

Quizplus · Accepted Answer

Oxytocin is involved in a positive feedback cycle during labor, where the hormone stimulates uterine contractions that push the baby towards the birth canal. As the baby moves towards the birth canal, the pressure on the cervix increases, causing more oxytocin to be produced, leading to increasingly strong contractions. This positive feedback cycle continues until the baby is born. Estrogen and progesterone are involved in regulating the menstrual cycle and pregnancy, while cortisol is involved in the stress response. Prolactin is involved in milk production.

The Hormone ____ Is Involved in a Positive Feedback Cycle