Question
Oxytocin has a ____ feedback loop.
Answer
Oxytocin has a positive feedback loop.
Note: The release of oxytocin promotes uterine contraction, which promotes more oxytocin release, which promotes stronger uterine contractions, and so on. Positive feedback loops can usually be identified by a “spiraling forward” scheme and usually have a definitive endpoint—in this case, delivery.
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Endocrine signaling involves the secretion of hormones ____
Endocrine signaling involves the secretion of ____ directly into the bloodstream.
Hormones bind to target receptors and ____
____ hormones are composed of amino acids.
Peptide hormones are composed of ____.
____ are signaling molecules that are secreted directly into the bloodstream to distant target tissues.