Oxytocin, which is synthesized in the hypothalamus, is secreted into the circulatory system of the body via the:

a. Posterior pituitary

b. Anterior pituitary

c. Adrenal glands

d. Pancreas

a. Posterior pituitary

Explanation:

The oxytocin is a hormone in charge of the process like labor, opening the cervix for the baby to come out, and also start the breastmilk production.

Its created by the hypothalamus but the one in charge of secrete to the blood system is the Posterior pituitary.