Both hormonal and neural controls are exercised.
Organs in hunger sensation are the stomach,
intestines, pancreas, hypothalamus in the brain. Organ systems
involved are Digestive system, Endocrine system, Nervous system, Circulatory
Our body and system feels the urge and need to eat food. This
sensation is called hunger.
Digestive system maintains the sugar levels in the blood. When the
level falls below a certain threshold (or when stomach is empty), a hormone Ghrelin
is secreted in the stomach. Ghrelin is also called the hunger hormone. It is
produced in gastro-intestinal tract. After eating food, the stomach gets
stretched and the ghrelin secretion stops. Ghrelin acts on the hypothalamic
brain cells of our central nervous system.