Cortisol helps to control all of the following:
1. **Blood pressure**: Cortisol plays a role in regulating blood pressure by influencing the function of blood vessels and the heart. It can help increase blood pressure in times of stress or danger.
2. **Heart rate**: Cortisol affects the heart rate by influencing the responsiveness of the heart to signals from the nervous system. It can increase heart rate during stressful situations to prepare the body for action.
3. **Blood sugar**: Cortisol is involved in the regulation of blood sugar levels. It works to increase blood sugar (glucose) by promoting glucose production in the liver and reducing glucose utilization in cells, especially during times of stress.
Therefore, the correct answer is **All of the above**. Cortisol plays a crucial role in regulating blood pressure, heart rate, and blood sugar levels in the body.
