Half life biological of oxytocin:
**Core Concept**
Oxytocin is a peptide hormone involved in various physiological processes, including uterine contraction, milk letdown, and social behavior. Its biological half-life is a critical parameter that influences its clinical applications.
**Why the Correct Answer is Right**
Oxytocin is primarily degraded by aminopeptidases in the bloodstream. Its biological half-life is approximately 3-5 minutes. This rapid clearance is essential for the hormone's transient effects on uterine contraction and milk letdown during labor and breastfeeding. The short half-life of oxytocin also allows for its repeated administration in clinical settings.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is too long for oxytocin's biological half-life. While oxytocin's pharmacological half-life can be influenced by various factors, its biological half-life remains relatively short.
**Option B:** This option is incorrect as it is not a commonly accepted value for oxytocin's biological half-life.
**Option C:** This option is too short for oxytocin's biological half-life. Although oxytocin is rapidly cleared from the bloodstream, its half-life is not as short as this option suggests.
**Clinical Pearl / High-Yield Fact**
Remember that oxytocin's short biological half-life necessitates its repeated administration in clinical settings, such as during labor or breastfeeding.
**Correct Answer:** D. 3-5 minutes