Select all that applyWhat three substances play a key role in hunger, eating, and satiety?Multiple select question.glucoseinsulincortisoltestosteroneleptin

Key Substances Involved in Hunger, Eating, and Satiety

To identify the substances that play a significant role in hunger, eating, and satiety, let's analyze each option provided:

1. Glucose:

   • Glucose is a primary source of energy for the body and plays a crucial role in signaling hunger and satiety.
   • High levels of glucose after eating can signal the body to stop eating.

2. Insulin:

   • Insulin is released in response to glucose levels and helps regulate blood sugar. It also plays a role in signaling satiety and can influence hunger.

3. Cortisol:

   • Cortisol is a stress hormone that can impact appetite and cravings. However, it is less directly involved in the regulation of hunger and satiety compared to glucose and insulin.

4. Testosterone:

   • Testosterone primarily influences muscle and fat distribution and does not have a direct role in hunger or satiety.

5. Leptin:

   • Leptin is a hormone produced by adipose (fat) tissue that signals to the brain to reduce appetite and increase energy expenditure, thus playing a significant role in satiety.

Conclusion

Based on the analysis, the substances that play a key role in hunger, eating, and satiety are:

• Glucose
• Insulin
• Leptin

Cortisol may influence behavior related to eating but is not a primary regulator of hunger and satiety. Therefore, the correct selections are glucose, insulin, and leptin.