Question

Which of the following induces parturition?
A. Vasopressin
B. Oxytocin
C. GH
D. TSH

Answer 1

This hormone is also known as cuddle hormone or love hormone. It is produced by the hypothalamus gland. It plays an important role in the development of an infant.

Complete answer: Parturition is the scientific term used to refer to childbirth. It is the process of the culmination of pregnancy after nearly nine months of conception. It is divided into three stages; dilation, expulsion and placental. Childbirth or parturition is also called labour and is induced by a hormone called oxytocin. It leads to the contraction of smooth muscles of myometrium of the uterus, which in turn directs the foetus towards the birth canal. It also helps in shrinking the uterus after delivery. Oxytocin, an endogenous neuropeptide, is produced in the liver as well as by enzyme oxytocinase. Its source tissue is the pituitary gland. It is produced in the hypothalamus and released by the posterior pituitary. Oxytocin is a peptide of 9 amino acids and has a molecular mass of 1007 Da. The hormonal actions of oxytocin are mediated by oxytocin receptors which is a G-protein-coupled receptor.
Hence, the correct answer is option B.

Additional information: The other hormone released during parturition is relaxin. This hormone causes relaxation of the pelvic ligaments and prepares the uterus for childbirth.

Note: Oxytocin is also known to promote mother-child bonding as well as involved in the production of milk in the breast for the baby to drink. Breastfeeding is the most vital part of the development of the child after birth. It provides nutrition to the baby.