The correct option is B Hypothalamus
Pancreas serves as both exocrine and endocrine gland while thyroid, anterior and posterior pituitary glands serve endocrine functions only. The hypothalamus releases regulatory hormones to control the secretions of the pituitary gland. It is also part of the autonomic system and contains regulatory centers for control of emotional responses, body temperature, water balance, and appetite. Thus, the correct answer is option E.