Final answer:
The dominant feedback loop in the pituitary gland is the negative feedback loop.
Step-by-step explanation:
The dominant feedback loop in the pituitary gland is the negative feedback loop. Most endocrine hormones are controlled by negative feedback loops, including the production of thyroid hormones and glucocorticoids. The negative feedback loop involves the hypothalamus, pituitary gland, and the target gland. On the other hand, only a few hormones, like prolactin, are controlled by positive feedback loops, which involve the nipples, hypothalamus, pituitary gland, and the target gland.