is the anterior pituitary a gland composed entirely of neurons
Pituitary Gland. The pituitary gland, or hypophysis, is about the size of a pea and sits in the small, bony cavity (sella turcica) at the base of the brain. The pituitary gland is divided into two sections: the anterior lobe (adenohypophysis) and the posterior lobe (neurohypophysis).The posterior pituitary is, in effect, a projection of the hypothalamus.It does not produce its own hormones, but only stores and releases the hormones created by the hypothalamus, whereas the anterior pituitary produces and secretes its own hormones.he posterior pituitary is, in effect, a projection of the hypothalamus. It does not produce its own hormones, but only stores and releases the hormones created by the hypothalamus, whereas the anterior pituitary produces and secretes its own hormones.