The pituitary gland or hypophysis is a structure that measures 1.3 cm in diameter located in the sella turcica of the sphenoid bone and is attached to the hypothalamus by the stalklike structure called infundibulum. The pituitary gland has two anatomically and functionally separated lobes. The anterior pituitary gland/lobus anterior consists of approximately 75% of the weight of the structure. The anterior lobe secretes a wide range of hormones and therefore forms the glandular part of the pituitary. The posterior lobe/lobus posterior contains axons whose cell bodies are located in the hypothalamus. Although this lobe does not synthesize hormones it stores and releases oxytocin and antidiuretic hormone.