Term: motor neuroendocrine magnocellular oxytocin neuron

Definition: Oxytocin and vasopressin are the prototypical hormones of the magnocellular secretory system. The distribution of magnocellular neurosecretory vasopressin and oxytocin neurons is illustrated schematically in Figure 3, where it can be seen that oxytocin cells tend to be concetrated anteriorly and medially, while vasopressin cells tend to be concentrated posteriorly and anteriorly. ..these two groups of magnocellular neurosceretory neurons are found throughout the rostral half of the hypothalamus.