Final answer:
The hypothalamus region of the brain plays a role in regulating hunger and satiety. Neural and hormonal responses are involved in the sensation of hunger and satiety, with signals from the digestive system and satiety hormones influencing the brain.
Step-by-step explanation:
The sensation of hunger and satiety is regulated by the hypothalamus region of the brain. Several physiological mechanisms are involved in the initiation of eating and the feeling of fullness and satisfaction, including neural and hormonal responses. The brain receives signals from the digestive system, such as blood glucose levels, gastrointestinal tract passage, and the release of satiety hormones like leptin.