Review of the Anatomy and Physiology of the Pituitary Gland The adult pituitary gland weighs approximately 500-600 g and is typically 1.2-1.5 cm in diameter and 0.5 cm thick, occupying ...

The pea-sized pituitary gland is composed of both anterior and posterior lobes; in adults, the vertical diameter is approximately 8mm, with the horizontal circumference found to be 12 millimeters ...