Final answer:
The neural and hormonal signals that control hunger and satiety originate in various physiological mechanisms in the body, with the brain playing a central role in regulating these sensations. The hypothalamus and hindbrain are important sites of integration for hunger and satiety signals. Factors such as blood glucose levels, gastrointestinal signals, and the release of satiety hormones contribute to the regulation of eating behavior.
Step-by-step explanation:
The neural and hormonal signals that help control sensations of hunger and satiety originate in all of the following except the nutrients diffuse across the intestines. The control center for hunger and satiety is the brain, which regulates the functions of the digestive system through neural and hormonal responses. The signals of hunger and satiety are integrated in the hypothalamus and hindbrain, and various physiological mechanisms such as blood glucose levels, gastrointestinal signals, and the release of satiety hormones contribute to the regulation of eating behavior.