The one which causes contraction of wall of the uterus during and after birth?
Correct answer: C. Oxytocin
- A. ADH
- B. MSH
- C. Oxytocin
- D. Progesterone
Explanation
Oxytocin stimulates contraction of the uterine smooth muscle during labour and also helps the uterus contract after birth, reducing bleeding. ADH mainly promotes water reabsorption, while progesterone supports pregnancy rather than directly causing labour contractions. Students may choose progesterone because it is a reproductive hormone, but oxytocin is the hormone responsible for uterine contraction.
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