How does the human body prevent internal energy levels from becoming too low?(1 point) Responses The digestive system transmits feelings of hunger to the brain, which initiates eating. The digestive system transmits feelings of hunger to the brain, which initiates eating. The brain transmits feelings of hunger to the digestive system, which initiates eating. The brain transmits feelings of hunger to the digestive system, which initiates eating. The digestive system transmits feelings of fullness to the nervous system, which signals metabolism to stop. The digestive system transmits feelings of fullness to the nervous system, which signals metabolism to stop. The nervous system transmits feelings of fullness to the digestive system, which signals metabolism to stop.
The human body prevents internal energy levels from becoming too low by signaling feelings of hunger when energy stores are depleted. The correct response from the given options is:
"The digestive system transmits feelings of hunger to the brain, which initiates eating."
This function is primarily controlled by the brain, in particular the hypothalamus, which receives and processes signals of energy deficiency. When the body needs energy, ghrelin (a hormone produced in the stomach) levels rise, which signals the hypothalamus to induce the sensation of hunger. This encourages the individual to eat and replenish energy stores. Conversely, when the digestive system detects that sufficient food has been consumed, it transmits feelings of fullness or satiety to the brain to stop eating. This is mediated by the release of satiety hormones like leptin, peptide YY (PYY), and cholecystokinin (CCK).