During mammalian labor and delivery, the contraction of uterine muscles is enhanced by oxytocin. This is an example of

During mammalian labor and delivery, the contraction of uterine muscles is enhanced by oxytocin. This is an example of




A) a negative feedback system.
B) a hormone that is involved in a positive feedback loop.
C) signal transduction immediately changing gene expression in its target cells.
D) a hormone that acts in an antagonistic way with another hormone.
E) the key role of the anterior pituitary gland in regulating uterine contraction.


Answer: B


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