The posterior pituitary (or neurohypophysis) comprises the posterior lobe of the pituitary gland and's part of the endocrine system. Anatomy The posterior pituitary gland consists mainly of neuronal projections (axons) extending from the supraoptic and paraventricular nuclei of the hypothalamus that secrete peptide hormones into the capillaries of the hypophyseal circulation. The neurohypophysis also contains a specialised type of astrocytic glial cell - "pituicytes". Despite its name, the pos… (More on Neurohypophysis)