Which two hypothalamic nuclei store hormones released by the posterior pituitary?

• A. supraoptic and paraventricular
• B. Ventromedial and Dorsomedial
• C. Arcuate and Paraventricular
• D. Lateral and Suprachiasmatic

Answer: (A)

The hormones released by the posterior pituitary are vasopressin (ADH) and oxytocin, and they are produced in two specific hypothalamic nuclei. Magnocellular neurons in the supraoptic nucleus synthesize vasopressin, while those in the paraventricular nucleus synthesize oxytocin. These neurons send long axons down into the posterior pituitary, where the hormones are stored and released into the bloodstream when needed. The other hypothalamic areas listed aren’t the sources for hormones stored in the posterior pituitary; they’re involved in different regulatory roles and primarily influence the anterior pituitary or other brain functions.