Physiology The suckling reflex: A Has afferent hormonal and efferent neuronal components B Increases placental lactogen secretion C Increases the release of dopamine from the arcuate nucleus D Triggers the release of oxytocin by stimulating the supraoptic nuclei 💡 Explanation The suckling reflex: ✓ Correct Answer: D. Triggers the release of oxytocin by stimulating the supraoptic nuclei