Question

Which of the following statements is correct about oxytocin in pregnant females?

• A. Stimulates contraction during implantation
• B. Secreted by ovary
• C. Stimulates growth of mammary glands
• D. Stimulates uterine contraction during parturition

Answer 1

The correct option is D Stimulates uterine contraction during parturition

Foetal ejection reflex triggers the secretion of oxytocin from maternal pituitary. This again induces the production of prostaglandins, which helps it to increase the frequency of the uterine contractions even further leading to parturition. Oxytocin helps in expulsion of milk from the mammary glands. There will be no uterine wall contractions during implantation, and the contractions occur only during the labor. Estrogen helps in the growth of mammary glands.