The pituitary gland has three parts. One regulates physiological processes such as stress, another creates and releases hormones, and the final part is connected to the hypothalamus. The hormones that the pituitary gland secretes are involved in the control of growth, blood pressure, metabolism and more. As a communicative center between the nervous system and the endocrine system, the pituitary also controls other endocrine glands - so B is the correct answer.