A classmate is working on her presentation on the endocrine system for class. You overhear her as she says, "This gland is often called the 'master gland' because it has an effect on the secretions of all the other endocrine glands." It sounds as though she is talking about the
◦ adrenals.
◦ pancreas.
◦ pituitary.
◦ hypothalamus.