• A short polypeptide hormone, C<sub>43</sub>H<sub>66</sub>N<sub>12</sub>O<sub>12</sub>S<sub>2</sub>, released from the posterior lobe of the pituitary gland, that stimulates the contraction of smooth muscle of the uterus during labor and facilitates ejection of milk from the breast during nursing.
  • A <xref>hormone</xref> that <xref>stimulates</xref> <xref>contractions</xref> during <xref>labour</xref>/<xref>labor</xref>, and then the <xref>production</xref> of <xref>milk</xref>.
  • hormone secreted by the posterior pituitary gland (trade name Pitocin); stimulates contractions of the uterus and ejection of milk
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