| List-I | List-II | ||
| A. | Parathyroid hormone | I. | Flight or fight response |
| B. | Epinephrine and Nor-epinephrine | II. | Regulates the body's biological clock |
| C. | Thyroid stimulating hormone | III. | Increases blood \(\)Ca2+ level |
| D. | Melatonin | IV. | Synthesis of \(\text{T}_3~ \text{and} ~\text{T}_4\) hormones |
Normal sleep-wake cycle in a human body is maintained by the secretion of:
1. Thyroid gland
2. Thymus gland
3. Pineal gland
4. Pituitary gland
Artificial light, extended work-time and reduced sleep-time disrupt the activity of:
| 1. | Thymus gland | 2. | Pineal gland |
| 3. | Adrenal gland | 4. | Posterior pituitary gland |