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Physiology

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Endocrinology

Question
15 out of 19
 

Which of the following is false regarding oxytocin? (LQ)



A It causes milk ejection reflex

B It is least sensitive to uterus in pregnancy

C May also involved in luteolysis

D It triggers increase in intracellular level of Ca++

Ans. B It is least sensitive to uterus in pregnancy
  1. Oxytocin acts on the membranes of myometrial and myoepithelial cells to cause an increased force of contraction.
  2. The sensitivity of the myometrium to oxytocin Increases with the duration of pregnancy, and a role for oxytocin in the initiation and maintenance of labor is probable.
  3. It also contracts myoepithelial cells in the breasts, thereby expressing milk from the breasts when the baby suckles.

Endocrinology Flashcard List

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