Which of the following is NOT a function of oxytocin?

Oxytocin is primarily known for its roles in reproductive functions and behaviors. It is produced in the hypothalamus and released by the posterior pituitary gland. One of its well-documented functions is to stimulate uterine contractions during childbirth, facilitating labor. This makes it vital for childbirth assistance. Additionally, oxytocin triggers the milk letdown reflex during breastfeeding, allowing mothers to deliver milk to their infants effectively.

Among the options listed, bone growth is not associated with the functions of oxytocin. Bone growth is primarily regulated by other hormones such as growth hormone and parathyroid hormone, which are involved in the processes of bone formation and resorption. Therefore, stating that bone growth is a function of oxytocin is incorrect. This distinction highlights the specific physiological roles that oxytocin plays compared to those of other hormones involved in skeletal development and health.