Final answer:
The oxytocin and vasopressin hormones from the hypothalamus are involved in prosocial behavior, working through the hypothalamic-pituitary axis which coordinates the endocrine and nervous systems. The amygdala and nucleus accumbens within the limbic system also contribute to these behaviors by affecting the hypothalamus.
Step-by-step explanation:
The two neuro-hormone systems involved in prosocial behavior are regulated by the oxytocin and vasopressin hormones, produced by the neurons of the hypothalamus. These hormones influence various aspects of social behavior and emotional responses. The hypothalamic-pituitary axis plays a pivotal role as it integrates the nervous and endocrine systems, where the hypothalamus synthesizes and secretes these hormones.
The operation of these systems is quite complex, as the hypothalamus not only synthesizes and sends hormones to the posterior pituitary gland but also secretes regulatory hormones that control the anterior pituitary gland. The medial forebrain bundle and the dorsal longitudinal fasciculus are the main pathways through which the hypothalamus sends output to influence the autonomic nervous system. Emotional responses are also tied to these processes, with structures of the limbic system such as the amygdala and the nucleus accumbens playing a significant part in sexual motivation and other emotions that can impact social behaviors.