Question

how does the human body prevent internal energy levels from becoming too low? (1 point) 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 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.

Explanation:

To determine the correct answer, we analyze each option:

• Option 1: The digestive system (via signals like hunger pangs) sends hunger signals to the brain (nervous system), prompting eating to replenish energy. This aligns with how the body regulates energy intake—when energy is low, hunger is sensed and eating is initiated.
• Option 2: The brain doesn't transmit hunger to the digestive system to start eating; rather, the digestive system (and related sensors) signal the brain about hunger.
• Option 3: The question is about preventing energy from being too low, not too high. Signaling metabolism to stop (related to fullness) is for when energy is sufficient, not for preventing low energy.
• Option 4: Similar to Option 3, this is about regulating when energy is high (fullness), not preventing low energy.

Answer:

A. The digestive system transmits feelings of hunger to the brain, which initiates eating.