Final answer:
The hypothalamus produces the antidiuretic hormone (ADH) also known as vasopressin and oxytocin, which are stored and released by the posterior pituitary into the bloodstream.
Step-by-step explanation:
The hypothalamus is the part of the brain that produces the hormones antidiuretic hormone (ADH), also known as vasopressin, and oxytocin. These hormones are then transported down the nerve cell axons to the posterior pituitary where they are stored and eventually released into the bloodstream.
The posterior pituitary does not produce these hormones but serves as a storage site. Oxytocin is involved in a several functions such as stimulating uterine contractions during labor and the ejection of breast milk. ADH plays a critical role in regulating water balance in the body and maintaining blood pressure.