Here are the matches for each description provided:
- Released by the liver to increase the body's energy - glucose
- Signals the adrenal glands to produce hormones - hypothalamus
- Weakened if under stressful conditions for an extended period of time - immune system
- Response to stress in which the body attempts to improve vision - fight or flight
- Negative stress - distress
- Positive stress - eustress
- Physical ailment caused by stress - ulcers
- Produce the hormones adrenaline and cortisol - adrenal glands