has part has part has_part characteristic of part of has modifier neurohypophysis development abnormal pituitary gland development abnormal neurohypophysis morphology abnormal neurohypophysis development abnormal neurophysis development abnormal posterior pituitary gland development aberrant formation or incomplete differentiation of the posterior lobe of the pituitary gland which develops as a neurohypophyseal bud, a depression in the neuroectoderm of the floor of the hypothalamus; the infundibulum, another diverticulum from the inferior aspect of the diencephalon, develops as an outgrowth of the neurohypophyseal bud and connects the neurohypophysis to the hypothalamus; the neurohypophysis develops as the infundibulum grows inferiorly from the diencephalon to meet the developing adenohypophysis (anterior pituitary lobe); the fully developed neurohypophysis consists of the infundibulum and the pars nervosa; the neural connection between the hypothalamus and pars nervosa is through the hypothalamohypophyseal tract that develops within the infundibulum abnormal posterior pituitary lobe development abnormal posterior pituitary development MP:0013338 quality abnormal